You are given a code:

def main_solution(x):
    return func_20(func_15('nwfpei'), ('lnbkm' + 'mige'))

Can you predict the output of `main_solution("dgapi")` 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": "dgapi"}, "ref_output": "\u00ablnn\u00bbb\u00abkwm\u00bbm\u00abifg\u00bbe\u00abp\u00bb\u00abe\u00bb\u00abi\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('nwfpei'), ('lnbkm' + 'mige'))", "funcname": "main_solution"}
rule