You are given a code:

def main_solution(x):
    return func_5(func_15(x), 'ee')

Can you predict the output of `main_solution("pmxlci")` 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": "pmxlci"}, "ref_output": "ee\u00abp\u00bb\u00abm\u00bb\u00abx\u00bb\u00abl\u00bb\u00abc\u00bb\u00abi\u00bb", "ref_code": "def main_solution(x):\n    return func_5(func_15(x), 'ee')", "funcname": "main_solution"}
rule