Task: Program Execution
Input (English): W, e, 3451, 6945, n, 497, 4671, b, 6475, 9955, 7367, 4983, 4561, d, 9401, e, 1307, 6285, N, o, T, 5919, 9183
Output (English): 1, 2, 5, 8, 14, 16, 19, 20, 21