Task: Program Execution
Input (English): 1, 5, ['5351', 'p', '7757', '4621', '2709', '7397', 'z', 'i', 'x', '3719', '9821', '2557', '2721', '4883', 'k', 'P', '4967', '4131', '6569', '6497', 'd', 'C', 'a', '1921', '4445', 'W', '6247', '9149', '3471']
Output (English): 5351, 7397, 9821, P, d, W