Task: Program Execution
Input (English): 7559 S 4323 2527 7337 n 565 R j 1341 X 7121 y 9701 S n z m 5873 G e a t V G d j 7797 9999 s s 9337
Output (English): 2, 6, 8, 9, 11, 13, 15, 16, 17, 18, 20, 21, 22, 23, 24, 25, 26, 27, 30, 31