You are given a code:

def main_solution(x):
    return func_20(func_15('jjmu'), func_19('yrk', 1))

Can you predict the output of `main_solution("edvi")` 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": "edvi"}, "ref_output": "\u00abrjk\u00bby\u00abj\u00bb\u00abm\u00bb\u00abu\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('jjmu'), func_19('yrk', 1))", "funcname": "main_solution"}
rule