Task: Program Execution
Input (English): wBPgcMpQnOADycjuYuWpZmMs, IslyGgcMpQnOADycjuYuMiQqZiCVwIwbL
Output (English): a, b, c, d, g, i, j, l, m, n, o, p, q, s, u, v, w, y, z