You are given a code:

def main_solution(x):
    return func_20(('edyxlj').swapcase(), func_15(x))

Can you predict the output of `main_solution("empwnl")` 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": "empwnl"}, "ref_output": "E\u00abDeY\u00bbX\u00abLmJ\u00bb\u00abp\u00bb\u00abw\u00bb\u00abn\u00bb\u00abl\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('edyxlj').swapcase(), func_15(x))", "funcname": "main_solution"}
rule