Write here reversed alphabet
I assume that you are asking for the English alphabet. The lower case alphabet is: z, y, x, w, v, u, t, s, r, q, p, o, n, m, l, k, j, i, h, g, f, e, d, c, b, a.
With capital letters it is: Z, Y, X, W, V, U, T, S, R, Q, P, O, N, M, L, K, J, I, H, G, F, E, D, C, B, A.
Now, do it with the Greek Alphabet. Then, do Russian Alphabet