You are given a code:

def main_solution(x):
    return ((x + 'yfj') + func_22('pamgnw'))

Can you predict the output of `main_solution("bib")` 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": "bib"}, "ref_output": "bibyfjpamgnw", "ref_code": "def main_solution(x):\n    return ((x + 'yfj') + func_22('pamgnw'))", "funcname": "main_solution"}
rule