Task: Program Execution
Input (English): J, v, O, l, 7759, z, l, 2979, q, 8973, f, 5419, F, H, n, U, C, 5391, s, W, F, i, u
Output (English): 1, 2, 3, 4, 6, 7, 9, 11, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23