You are given a code:

def main_solution(x):
    return (('yco' + 'iqsbsa') + func_20('pfis', 'dundm'))

Can you predict the output of `main_solution("ireuzkho")` 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": "ireuzkho"}, "ref_output": "ycoiqsbsapdfuinsdm", "ref_code": "def main_solution(x):\n    return (('yco' + 'iqsbsa') + func_20('pfis', 'dundm'))", "funcname": "main_solution"}
rule