Task: Program Execution
Input (English): 1423, A, 8755, 1021, j, 2373, M, 7031, 8765, 277, 3025, W, 7373, S, m, 5399, Q, L, 9515, 2211, 5101, F, 7303, G
Output (English): 1, 3, 4, 6, 8, 9, 10, 11, 13, 16, 19, 20, 21, 23