You are given a code:

def main_solution(x):
    return func_20(func_20(x, 'zeglb'), func_15('xjutv'))

Can you predict the output of `main_solution("mxzkeocrmk")` 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": "mxzkeocrmk"}, "ref_output": "m\u00abzxx\u00bbe\u00abzjg\u00bbk\u00ablue\u00bbb\u00abotc\u00bbr\u00abmvk\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20(x, 'zeglb'), func_15('xjutv'))", "funcname": "main_solution"}
rule