Task: Program Execution
Input (English): z, 7755, 9899, f, Q, 1539, 5163, 1619, 8907, 7437, w, O, 969, I, 5713, C, S, y, 4101, q, P, 5749, c
Output (English): z, f, Q, w, O, I, C, S, y, q, P, c