You are given a code:

def main_solution(x):
    return func_20(('ychrgp' + x), func_15(x))

Can you predict the output of `main_solution("rsnalubthq")` 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": "rsnalubthq"}, "ref_output": "y\u00abcrh\u00bbr\u00abgsp\u00bbr\u00absnn\u00bba\u00ablau\u00bbb\u00abtlh\u00bbq\u00abu\u00bb\u00abb\u00bb\u00abt\u00bb\u00abh\u00bb\u00abq\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('ychrgp' + x), func_15(x))", "funcname": "main_solution"}
rule