Task: Program Execution
Input (English): McNSGHVsQWZFNDZgilQtZTLGcHXnqyhoyw, WnhJYsQWZFNDZgilQtZdsQcUXD
Output (English): c, d, f, g, h, i, l, m, n, o, q, s, t, v, w, x, y, z