Task: Program Execution
Input (English): i, l, X, J, M, 187, 9437, U, 5115, 3319, o, v, m, C, 5441, 3263, 4833, q, 1315, 6465, t, i
Output (English): 6, 7, 9, 10, 15, 16, 17, 19, 20