You are given a code:

def main_solution(x):
    return func_11(func_20('kkwj', 'ctitk'), 1)

Can you predict the output of `main_solution("mqhudyhc")` 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": "mqhudyhc"}, "ref_output": "ldluxjkul", "ref_code": "def main_solution(x):\n    return func_11(func_20('kkwj', 'ctitk'), 1)", "funcname": "main_solution"}
rule