You are given a code:

def main_solution(x):
    return func_20(('orc' + 'bhjkx'), (x + 'hkug'))

Can you predict the output of `main_solution("ofex")` 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": "ofex"}, "ref_output": "oorfcebxhhjkkuxg", "ref_code": "def main_solution(x):\n    return func_20(('orc' + 'bhjkx'), (x + 'hkug'))", "funcname": "main_solution"}
rule