You are given a code:

def main_solution(x):
    return func_20(func_5('rvzqzx', 'gf'), func_1('szqr', 3))

Can you predict the output of `main_solution("ylz")` 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": "ylz"}, "ref_output": "gsfzrqvrzsqzzqxrszqr", "ref_code": "def main_solution(x):\n    return func_20(func_5('rvzqzx', 'gf'), func_1('szqr', 3))", "funcname": "main_solution"}
rule