You are given a code:

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

Can you predict the output of `main_solution("zrzvzhptax")` 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": "zrzvzhptax"}, "ref_output": "d|t|y|u|i\u00aby\u00bb\u00abp\u00bb\u00abw\u00bb\u00aby\u00bb\u00abm\u00bb\u00abg\u00bb", "ref_code": "def main_solution(x):\n    return (func_13('dtyui', '|') + func_15('ypwymg'))", "funcname": "main_solution"}
rule