http://youtu.be/T70-HTlKRXo

(Vigilante Man weeps because you're stupid., Sun 18 Dec 2011, 22:25, 1 reply)

tinny & woody
You are spot on with the Monty P reference that was where I got the letter labels from originally, TSKXZVQC are tinny letters whilst LRMNWB are woody letters. There is another group which contains letters which can work with (some) tinny and woody letters these are YDFGHJP.
E and A are the woody vowels whilst I and O are the tinny vowels with U capable of working with either the woody or the tinny vowels.
There are numerous combinations of Woody and Tinny letters that are allowed or barred depending on the distribution of the other letter couplets.
(Stunt slug If God existed I'd want to fight him, Mon 19 Dec 2011, 0:48, closed)