Task: Program Execution
Input (English): MPewDKGqRCmVMwkSePimtPlPjtBbCk, NDjqQiPsVMwkSePimtPlPUDEEHMRhVYHuR
Output (English): d, e, h, i, j, k, l, m, n, p, q, r, s, t, u, v, w, y