Task: Program Execution
Input (English): RCtStoUMoQFiVJTChHdJYsMfZsSnyVMTtTBVnLGnAU, TGPOebQhxVJTChHdJYsMfZsSOkVaAuePxurwRX
Output (English): a, b, c, d, f, g, h, i, j, l, m, n, o, q, r, s, t, u, v, y, z