I do remember the Alphabet Chat, and I do have the 'H' one on one of the Season 25 shows where Flo Bear tells the story about CinderTelly.
I do know that on the 'H' one, Mr. Chatterly had a talk about the letter H with Herbert Hare.
I think on the 'B' one, he had 'B' stuff on him.
On the 'O' one, I think in the beginning where the tall orange man muppet turned off the light before the Alphabet Chat was started, and I don't exactly know what's on it, but at the end, it had laboratory muppets, one of them who was green and had no hair on top who open Mr. Chatterly's room apart (was it for open or operation?)
On the 'R' one, it had the purple lady AM who sounded like Piggy, and I think Mr. Chatterly became angry thoughout the whole skit right after he got mad by caught by radishes,..and it had Gladys and Guy Smiley at the end...I don't know what he did on this skit.
Do you think my memories of the 'B', 'H', 'O', & 'R' versions of the Alphabet Chat were true?