You are given a code:

def main_solution(x):
    return func_20(func_1(x, 4), func_15(x))

Can you predict the output of `main_solution("kevqjm")` 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": "kevqjm"}, "ref_output": "k\u00abekv\u00bbq\u00abjem\u00bbk\u00abevv\u00bbq\u00abjqm\u00bbk\u00abejv\u00bbq\u00abjmm\u00bbkevqjm", "ref_code": "def main_solution(x):\n    return func_20(func_1(x, 4), func_15(x))", "funcname": "main_solution"}
rule