Task: Program Execution
Input (English): f, 2867, h, 4553, 531, 7013, 771, 3223, b, h, 5567, J, 4335, o, 6911, c, G, 2403
Output (English): 2867, 4553, 531, 7013, 771, 3223, 5567, 4335, 6911, 2403