You are given a code:

def main_solution(x):
    return func_20(('ppg' + x), func_15('dgndek'))

Can you predict the output of `main_solution("yvhmc")` 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": "yvhmc"}, "ref_output": "p\u00abpdg\u00bby\u00abvgh\u00bbm\u00abcn\u00bb\u00abd\u00bb\u00abe\u00bb\u00abk\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('ppg' + x), func_15('dgndek'))", "funcname": "main_solution"}
rule