Task: Program Execution
Input (English): z, z, 4641, w, 9243, X, 7363, 5251, 6497, O, 4271, f, 3037, 5085, y, s, 6577
Output (English): 4641, 9243, 7363, 5251, 6497, 4271, 3037, 5085, 6577