w3 : :, ., !, 

w4 : -, [, ], ', ,, 

w5 : I, 1, *, 

w6 : A, B, C, J, L, O, P, R, S, X, 5, 0, 

w7 : D, E, F, G, H, K, M, N, Q, T, U, V, W, Y, Z, 2, 3, 4, 6, 7, 8, 9, /, &, @, ?, #, 