You are given a code:

def main_solution(x):
    return (func_13('nhcryg', '-') + func_22('oxqfet'))

Can you predict the output of `main_solution("idjb")` 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": "idjb"}, "ref_output": "n-h-c-r-y-goxqfet", "ref_code": "def main_solution(x):\n    return (func_13('nhcryg', '-') + func_22('oxqfet'))", "funcname": "main_solution"}
rule