You are given a code:

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

Can you predict the output of `main_solution("swpmtfnaio")` 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": "swpmtfnaio"}, "ref_output": "s\u00abwhp\u00bbm\u00abtuf\u00bbn\u00abari\u00bbo\u00absyw\u00bbp\u00abmct\u00bbf\u00abnra\u00bbio", "ref_code": "def main_solution(x):\n    return func_20((x + x), func_15('hurycr'))", "funcname": "main_solution"}
rule