You are given a code:

def main_solution(x):
    return func_20(func_1('qwx', 2), func_15('gyutcb'))

Can you predict the output of `main_solution("ecpaxb")` 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": "ecpaxb"}, "ref_output": "q\u00abwgx\u00bbq\u00abwyx\u00bb\u00abu\u00bb\u00abt\u00bb\u00abc\u00bb\u00abb\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_1('qwx', 2), func_15('gyutcb'))", "funcname": "main_solution"}
rule