Task: Program Execution
Input (English): 7867, 6069, 1503, c, 1137, W, I, 6707, 7053, b, O, 4195, 1955, M, T, q, 2105, g, 8069, 2175, 7607, 7667
Output (English): 4, 6, 7, 10, 11, 14, 15, 16, 18