You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_1('pahiij', 3))

Can you predict the output of `main_solution("uzwlbvgkb")` 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": "uzwlbvgkb"}, "ref_output": "\u00abpua\u00bbh\u00abizi\u00bbj\u00abpwa\u00bbh\u00abili\u00bbj\u00abpba\u00bbh\u00abivi\u00bbj\u00abg\u00bb\u00abk\u00bb\u00abb\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_1('pahiij', 3))", "funcname": "main_solution"}
rule