Task: Program Execution
Input (English): j, 1563, v, 121, 9361, c, 841, K, 4755, a, U, O, i, e, j, 4375, 4975, M, V, 8905, 7103, 3853, W, I
Output (English): 1, 3, 6, 8, 10, 11, 12, 13, 14, 15, 18, 19, 23, 24