You are given a code:

def main_solution(x):
    return func_5('butol', 'psq')

Can you predict the output of `main_solution("zslysuyckn")` 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": "zslysuyckn"}, "ref_output": "psqbutol", "ref_code": "def main_solution(x):\n    return func_5('butol', 'psq')", "funcname": "main_solution"}
rule