You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_13('klkgty', '_'))

Can you predict the output of `main_solution("jalyptayu")` 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": "jalyptayu"}, "ref_output": "\u00abkj_\u00bbl\u00ab_ak\u00bb_\u00abgl_\u00bbt\u00ab_yy\u00bb\u00abp\u00bb\u00abt\u00bb\u00aba\u00bb\u00aby\u00bb\u00abu\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_13('klkgty', '_'))", "funcname": "main_solution"}
rule