Task: Program Execution
Input (English): 4551, x, B, b, 2665, i, 7779, 543, a, 9593, 747, z, O, 5847, T, 4519, 2975, p, q, L, 2989
Output (English): 1, 5, 7, 8, 10, 11, 14, 16, 17, 21