You are given a code:

def main_solution(x):
    return (func_9('otuv') + func_13(x, '|'))

Can you predict the output of `main_solution("wnuwfzigxa")` 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": "wnuwfzigxa"}, "ref_output": "otuvvutow|n|u|w|f|z|i|g|x|a", "ref_code": "def main_solution(x):\n    return (func_9('otuv') + func_13(x, '|'))", "funcname": "main_solution"}
rule