You are given a code:

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

Can you predict the output of `main_solution("pcikcgb")` 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": "pcikcgb"}, "ref_output": "pkhgyagoxnf\u00abp\u00bb\u00abc\u00bb\u00abi\u00bb\u00abk\u00bb\u00abc\u00bb\u00abg\u00bb\u00abb\u00bb", "ref_code": "def main_solution(x):\n    return (func_20('phygxf', 'kgaon') + func_15(x))", "funcname": "main_solution"}
rule