You are given a code:

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

Can you predict the output of `main_solution("ebulqgjsfg")` 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": "ebulqgjsfg"}, "ref_output": "e\u00abbeu\u00bbl\u00abqbg\u00bbj\u00absuf\u00bbg\u00abulu\u00bbv\u00abbq\u00bb\u00abg\u00bb\u00abj\u00bb\u00abs\u00bb\u00abf\u00bb\u00abg\u00bb", "ref_code": "def main_solution(x):\n    return func_20((x + 'uuvb'), func_15(x))", "funcname": "main_solution"}
rule