Task: Program Execution
Input (English): p, 3253, z, 9659, 7437, 4535, 7071, w, 2573, o, Y, k, W, 3679, q, 7969, c, t, M, 7453, u, c
Output (English): 1, 3, 8, 10, 11, 12, 13, 15, 17, 18, 19, 21, 22