Task: Program Execution
Input (English): 5753, 9001, D, i, 1017, f, 3339, 2787, t, 311, h, 1417, 6623, D, Y, 7633, e, 1219, s, c, q, t, 5085, k
Output (English): 1, 2, 5, 7, 8, 10, 12, 13, 16, 18, 23