Task: Program Execution
Input (English): 901, 833, M, F, 8373, S, v, 7453, e, O, 7839, L, A, 5979, i, 631, 1981, V, O, 2701, 8311, 8515, 9107
Output (English): 3, 4, 6, 7, 9, 10, 12, 13, 15, 18, 19