Task: Program Execution
Input (English): l, 297, f, 6413, 449, Q, 7963, 451, E, 2133, q, r, 9911, 6905, a, 7999, 117, J, c
Output (English): 297, 6413, 449, 7963, 451, 2133, 9911, 6905, 7999, 117