You are given a code:

def main_solution(x):
    return (func_20('zycgg', 'owl') + ('nyvy' + 'xvk'))

Can you predict the output of `main_solution("oqp")` 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": "oqp"}, "ref_output": "zoywclggnyvyxvk", "ref_code": "def main_solution(x):\n    return (func_20('zycgg', 'owl') + ('nyvy' + 'xvk'))", "funcname": "main_solution"}
rule