Task: Program Execution
Input (English): Z, 1307, 2763, 9565, s, t, G, 19, 991, B, 1341, p, 4663, c, 8963, 1309, 9139, D, X, y, U, s, V
Output (English): 1, 5, 6, 7, 10, 12, 14, 18, 19, 20, 21, 22, 23