You are given a code:

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

Can you predict the output of `main_solution("wghekwe")` 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": "wghekwe"}, "ref_output": "\u00abuwt\u00bbz\u00abwgg\u00bbh\u00abehk\u00bbw\u00abee\u00bb\u00abk\u00bb\u00abw\u00bb\u00abe\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), ('utz' + x))", "funcname": "main_solution"}
rule