You are given a code:

def main_solution(x):
    return (func_23('rmma', 2) + func_13('yyktq', '-'))

Can you predict the output of `main_solution("ofhu")` 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": "ofhu"}, "ref_output": "rmma1y-y-k-t-q", "ref_code": "def main_solution(x):\n    return (func_23('rmma', 2) + func_13('yyktq', '-'))", "funcname": "main_solution"}
rule