You are given a code:

def main_solution(x):
    return func_22('ojrsb')

Can you predict the output of `main_solution("yiyso")` 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": "yiyso"}, "ref_output": "ojrs", "ref_code": "def main_solution(x):\n    return func_22('ojrsb')", "funcname": "main_solution"}
rule