You are given a code:

def main_solution(x):
    return (func_23('yrcuwd', 2) + func_13('zuwy', '_'))

Can you predict the output of `main_solution("luwpracomy")` 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": "luwpracomy"}, "ref_output": "yrcuwd1z_u_w_y", "ref_code": "def main_solution(x):\n    return (func_23('yrcuwd', 2) + func_13('zuwy', '_'))", "funcname": "main_solution"}
rule