Task: Program Execution
Input (English): 1, 15, ['7949', 'k', 'f', '6211', 'U', '4085', '3293', 'X', '8129', '6609', '5261', '4685', '5205', 'g', '9733', '9525', '6701', 'R', 't', '869', 'h', '6543', '143', '1559', '19']
Output (English): 9733g52054685526166098129X32934085U6211fk7949