You are given a code:

def main_solution(x):
    return func_20(('prnz' + x), func_13(x, '-'))

Can you predict the output of `main_solution("aiivjibryu")` 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": "aiivjibryu"}, "ref_output": "par-niz-aii-ivv-jji-bir-ybu-r-y-u", "ref_code": "def main_solution(x):\n    return func_20(('prnz' + x), func_13(x, '-'))", "funcname": "main_solution"}
rule