Task: Program Execution
Input (English): hCCDjYVPotRfkRoBGQxxFWFxfxUuXccXAc, YvkukcDdqnHPotRfkRoBGQxxFSwIbFfKkYuLGwr
Output (English): b, c, d, f, g, h, i, k, l, n, o, p, q, r, s, t, u, v, w, x, y