You are given a code:

def main_solution(x):
    return (func_20('wigmq', 'ovnte') + ('kxxb' + 'qgzd'))

Can you predict the output of `main_solution("ljtseefggx")` 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": "ljtseefggx"}, "ref_output": "woivgnmtqekxxbqgzd", "ref_code": "def main_solution(x):\n    return (func_20('wigmq', 'ovnte') + ('kxxb' + 'qgzd'))", "funcname": "main_solution"}
rule