So, I hosted this format one day, and did not realizing we had color blind players. I am very sorry!
For future reference,
WHITE TILES CAN BE ANY LETTER.
1 POINT "YELLOW" tiles are:
A , C, D, E, G, I, L, M, N, O, R, S, T, U.
2 POINT "BLUE" tiles are:
B, P, H.
3 POINT "POOPY GREEN" tiles are:
K, F, Y.
4 POINT "NEON GREEN" tiles are:
5 POINT "PURPLE" tiles are:
J, Q, X, Z.
I hope this gets rid of some of the confusion.
I would suggest printing this list out, so you have a "hard" copy!! :)