You are given a code:

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

Can you predict the output of `main_solution("fgcrwkflnh")` 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": "fgcrwkflnh"}, "ref_output": "f\u00abgjc\u00bbr\u00abwxk\u00bbf\u00ablbn\u00bbh\u00abzbn\u00bba\u00aboj\u00bb\u00abi\u00bb", "ref_code": "def main_solution(x):\n    return func_20((x + 'znao'), func_15('jxbbji'))", "funcname": "main_solution"}
rule