You are given a code:

def main_solution(x):
    return (func_20('rkg', 'sam') + func_13('adtq', '|'))

Can you predict the output of `main_solution("oxyrvinui")` 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": "oxyrvinui"}, "ref_output": "rskagma|d|t|q", "ref_code": "def main_solution(x):\n    return (func_20('rkg', 'sam') + func_13('adtq', '|'))", "funcname": "main_solution"}
rule