You are given a code:

def main_solution(x):
    return func_20(func_1('arhws', 4), func_15('walwur'))

Can you predict the output of `main_solution("qmcpiwxrls")` without writing any code? Please reason and put your final answer in the following json format: {"output": <your output>}, where <your output> should be the final string.
user
{"ref_input": {"x": "qmcpiwxrls"}, "ref_output": "a\u00abrwh\u00bbw\u00absaa\u00bbr\u00abhlw\u00bbs\u00abawr\u00bbh\u00abwus\u00bba\u00abrrh\u00bbws", "ref_code": "def main_solution(x):\n    return func_20(func_1('arhws', 4), func_15('walwur'))", "funcname": "main_solution"}
rule