Task: Program Execution
Input (English): f, 8099, 3235, 6059, 6453, U, 2519, E, 1419, u, M, 9727, 9329, z, v, j, J, f, B, 8135, 7791, i, k
Output (English): 1, 6, 8, 10, 11, 14, 15, 16, 17, 18, 19, 22, 23