Task: Program Execution
Input (English): t, 673, g, 7719, 4507, l, c, X, 2769, 4913, 2267, X, K, 6741, 9459, E, 9733
Output (English): t, g, l, c, X, X, K, E, 673, 7719, 4507, 2769, 4913, 2267, 6741, 9459, 9733