Task: Program Execution
Input (English): AumzkXxPljHlazHFCgUqWQxRIyoMvKOQFvaGOsA, ZfTDhhyDwVSglvFCgUqWQxRIyoMvKuvOfoM
Output (English): a, c, f, g, h, i, j, k, l, m, o, p, q, r, s, u, v, w, x, y, z