You are given a code:

def main_solution(x):
    return func_20(func_15('uwsc'), ('igmjsc' + 'ehj'))

Can you predict the output of `main_solution("nyvqsv")` 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": "nyvqsv"}, "ref_output": "\u00abiug\u00bbm\u00abjws\u00bbc\u00abesh\u00bbj\u00abc\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('uwsc'), ('igmjsc' + 'ehj'))", "funcname": "main_solution"}
rule