Season 1

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Mr. M tells of a story in which his munching mouth (which is how he gets his sound) got him into trouble at the market. Later Sam Gump puts Mr. M to the test: Can he recognize words that start with his sound?

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Mr. T retells the time he talked his way out of a confrontation with a bully called Terrible Tough Tony. It seems tall tales accompany Mr. T's tall teeth (which is how he gets his sound) wherever he goes.

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Mr. F can't find the right shoes to go with his funny feet (which is how he gets his sound).

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Mr. H is afraid of the barber shop. He thinks haircuts hurt. That is why Mr. H has that horrible hair (where he gets his sound).

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Mr. N causes a disturbance during story hour at the library, and helps Nardo the detective tame a Nasty, who turns into a Nice Nasty. Mr. N sings ""Meet Mr. N"". STARRING MR. N, NARDO, THE NASTY, NED THE NEWSMAN, the LIBRARIAN and a NURSE.

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Its Mr. B's birthday, and he meets Boris the Bulletin Board (who sounds just like Boris Badenov). The Letter People play party games. Mr. B sings ""Meet Mr. B"" STARRING MR. B, MR. H, MR. F, MR. T, MR. M, MR. N, BORIS THE BULLETIN BOARD, CAPITAL B, LOWER-CASE B, CREEPY BOY PUPPET WITH BIKE, CREEPY GIRL PUPPET WITH BEACHBALL, and CREEPY MAN PUPPET WITH BANJO.

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Miss A arrives in town with a deceptive sneeze (hers is the same sound that starts ""A-choo""). She plays a carnival game in which her sound appears in all four parts.

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A new television station is starting up in Letter People Land. All sorts of dreams fill the heads of the Letter People, as they try songs, jokes, and juggling. But their truest talent is in their sounds, and how their sounds blend together. There's only one catch: Miss A has to be in all the ""sound catches"" for the time being.

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All the Letter People show up at the new TV station to try their sound catches on Monty Swell. For the first time, all six Letter Boys make their sounds catch with Miss A. At Monty's suggestion, another Letter Boy stands on the other side of Miss A, and they make a word. It's the inspiration for a game show called The Catching Game.

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Clue A presents Monty Swell with a set of rules for The Catching Game. Each Letter Person can only make a sound when he or she is in a ""clue box."" Of the three clue boxes, the middle box is larger to emphasize Miss A's role (she's the only Letter Girl at this time). The Catching Game then airs for the first time.

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Mr. Z dresses in a coat lined with ""zipping zippers,"" which is where he gets his sound. He takes the advice of Zero the Owl to go to Letter People Land, but that means getting through the Zigzag Forest.

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A rustic Western setting provides the drama as Mr. P tries to get his food back from the Purple Peek-a-boo Palookas.

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Mr. S is a superhero residing in a secret sock cave. He needs to find the starter for his car, the Sockmobile, to drive his friend Slaw to the studios of The Catching Game. Trouble is, the starter must be recovered.

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Miss E drops in (literally) to Mr. Z's apartment. It's apparent that Miss E is the strongest of the Letter Girls, since her sound comes from the same sound that starts ""exercise."" She cleans up Mr. Z's apartment before making her debut on The Catching Game.

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Nardo the Detective returns. This time, he needs Miss I to help catch Ingrid, the pilferer of indigo ink. Miss I is the perfect right-hand Letter Girl for the job, as her skin is irritated with the mere mention of a word that starts like ""itchy itch.""

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Miss O is the most obstinate Letter Person around, and that's where she gets her sound. She stubbornly refuses to alter her strange opera about an ostrich and an omelet. Along the way, all the existing short sounds are reviewed (not surprisingly, Miss A, Miss E, and Miss I have unsatisfying roles in Miss O's opera). The abrupt end is not the end, as Miss O introduces a story about an odd octopus.

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Just what are the Unforgettable Underground Uglies? Miss U's uncle believes they took his baseball. But the Uglies want more from Miss U, whose sound is the same sound that starts ""upsey-daisy umbrella.""

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A vandal has defaced Mr. V's violin and other objects that start with the same sound that starts ""violet velvet vest."" Both Mr. V and Mr. B plot strategy when the vandal makes a bold claim.

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Mr. L is ready to open up a lemonade stand on the beach, but he'll have to contend with two villains first.

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Mr. B, Mr. P, and Mr. Z try to add their trademark clothing items to Mr. V, tearing his favorite vest in the process. In an act of vanity, Mr. V says he will never end a word so that no one will see the tear on the left side of his vest. That doesn't stop the other Letter Boys. They clutter their add-ons to Mr. S's super socks. Not all of them will come off, though. Mr. Z grants Mr. S the right to use the ""zipping zippers"" sound sometimes.

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Mr. V goes to the set of The Catching Game to explain his restriction (see Episode 20) to Monty Swell. He and other Letter People try to make the word ""vest,"" which is not easy to do in a clue box built for one. Mr. S and Mr. T are forced to share the ending clue box to make the word. Once that's done, Miss E declares that the combination of consecutive Letter Boys fit into a ""Squoosh Box.""

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Dolly the Dragon has escaped from her lair. Her owners get help from Mr. D, whose sound is the same sound that starts ""delicious doughnuts.""

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A ghost has rid the corner grocer of all his green grapes. This calls for only one man: the newly-arrived Mr. G. His sound is the same sound that starts ""gooey gum,"" which is one of the items they offer to the ghost as a trade.

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A carnival passes through town, filled with everything starting with the same sound that starts ""cotton candy."" A camel named Claude is part of the retinue, as is Mr. C, who is in search of his big break in show biz.

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The Grand Shish of Kebab asks Mr. K to rescue the nation's King, an expert kazoo player, from the clutches of a kazoo detractor. Mr. K, donned in leather football gear, heads off amidst a storm brewing in Letter People Land. Mr. C knows something about Mr. K's sound: it's the same sound that starts ""kicking.""

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All the other Letter People discover what Mr. C knew all along: he and Mr. K have the same sound. Both of them go to Miss I's Itsy Witsy Ice Cream Club where, grudgingly, they try to settle their quandaries. Which Letter Girls will each stand next to? And is squooshing with Mr. K safe?

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Mr. W needs to get back his wonderful wink (which is how he gets his sound). An impatient man unknowingly helps Mr. W get his wink back.

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The Letter Girls know well that they have to appear in every word that Letter People make. Miss A suggests that each of them adopt new sounds to go with their names. Before they know what hits them, the Green Gorillas band asks the Letter Girls for help to keep up their popularity. At that moment, Miss E is coaxed to write a song about the Letter Girls' long sounds. First with the news is Frantic Freddy, rambling wreck of the record rack.

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With each Letter Girl now bearing two sounds, how will people know which sound she is using? This question hovers over the planned melodrama. Quickly, the Letter People devise new rules: (A) a Letter Girl can use her short sound if the Letter Boy is alone at the end of a word (holding the badge of Cooperation), and (B) Miss E can stand outside the Ending Clue Box as a signal that the Letter Girl in the Catching Clue Box is using her long sound.

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Nardo the Detective gets an urgent message from millionaire heir Poopsie. It seems Poopsie can't read a note that begins, ""Come to the B-O-A-T."" In a meeting at Nardo's office, Miss O proposes one of the Letter Girls (the first) should say her long sound while the second Letter Girl is silent. Once they decipher Poopsie's first note, a few more notes await.