You are given a code:

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

Can you predict the output of `main_solution("zljc")` 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": "zljc"}, "ref_output": "q\u00abvzh\u00bbv\u00abhlo\u00bbg\u00abmje\u00bbl\u00abc\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('qvhvho' + 'gmel'), func_15(x))", "funcname": "main_solution"}
rule