Task: Program Execution
Input (English): E, 4769, 7489, B, D, 7133, 1807, 3015, 4621, 1905, j, 5469, f, d, C, 1993, 6209, J, I, 5017, 2719, t, D
Output (English): E, B, D, j, f, d, C, J, I, t, D, 4769, 7489, 7133, 1807, 3015, 4621, 1905, 5469, 1993, 6209, 5017, 2719