Task: Program Execution
Input (English): 4, ['S', '5425', 'B', '4925', '8857', '4465', 'L', 'C', 'i', 'I', 'S', '2423', 't', '9421', '23', '6373', 'Q', '1971', 'B', '7359', '1789', 'I', '61', '1461', '1879']
Output (English): S, 8857, i, t, Q, 1789, 1879