Task: Program Execution
Input (English): 7201, 7769, 55, Q, U, M, 9019, N, E, G, 2213, 8781, 3379, Q, 7689, 8925, m, 8027, 3255, 4857, 3735
Output (English): 1, 2, 3, 7, 11, 12, 13, 15, 16, 18, 19, 20, 21