Task: Program Execution
Input (English): 4, 20, ['P', '2307', '1847', 'y', '2339', 'Z', '9251', 'D', '7959', 'y', 'a', '2169', '2833', 'Y', 't', 'R', '629', '7083', 'V', '1507', 'd', 'K', '3935', 'y', '8471', 'H', '4001', '3609', 'a']
Output (English): y, 2339, Z, 9251, D, 7959, y, a, 2169, 2833, Y, t, R, 629, 7083, V, 1507