You are given a code:

def main_solution(x):
    return func_20('qcs', 'mgki')

Can you predict the output of `main_solution("qledgl")` 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": "qledgl"}, "ref_output": "qmcgski", "ref_code": "def main_solution(x):\n    return func_20('qcs', 'mgki')", "funcname": "main_solution"}
rule