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