Task: Program Execution
Input (English): 2573, g, 4703, 4231, T, 3409, 4149, 3969, N, 6539, L, u, 1783, 3515, 7495, f, O, r, P, h
Output (English): 2573, 7, 4703, 4231, 20, 3409, 4149, 3969, 14, 6539, 12, 21, 1783, 3515, 7495, 6, 15, 18, 16, 8