Task: Program Execution
Input (English): 6, ['8511', 'k', '3609', 'f', 'N', '5655', 'J', '1857', 'x', '6727', 'M', 'R', '1483', '7661', '993', '6151', '3391', '7807', '2403', '6721', '6185', '4005', 'Q', '3139', '8663', 'S', 'u', 'B']
Output (English): 8511, J, 1483, 2403, 8663