Task: Program Execution
Input (English): 6987, 3613, 6881, t, M, 6009, g, s, U, 7153, 6049, 2235, 6739, u, 7303, 6169, V, 9281, 9659, i
Output (English): 4, 5, 7, 8, 9, 14, 17, 20