You are given a code:

def main_solution(x):
    return func_5(('rkp' + x), 'ozma')

Can you predict the output of `main_solution("hojj")` 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": "hojj"}, "ref_output": "ozmarkphojj", "ref_code": "def main_solution(x):\n    return func_5(('rkp' + x), 'ozma')", "funcname": "main_solution"}
rule