Task: Program Execution
Input (English): IMQQjToWvsGWrCTPmStXZzarbRkWzeYfWURs, yGyjYrCTPmStXZzarbRdXLvlayiU
Output (English): a, b, c, e, f, g, i, j, k, m, o, p, q, r, s, t, u, v, w, x, y, z