You are given a code:

def main_solution(x):
    return (func_13(x, '|') + func_15('oymjft'))

Can you predict the output of `main_solution("kquoai")` 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": "kquoai"}, "ref_output": "k|q|u|o|a|i\u00abo\u00bb\u00aby\u00bb\u00abm\u00bb\u00abj\u00bb\u00abf\u00bb\u00abt\u00bb", "ref_code": "def main_solution(x):\n    return (func_13(x, '|') + func_15('oymjft'))", "funcname": "main_solution"}
rule