You are given a code:

def main_solution(x):
    return (func_15('rpmek') + ('omoedc' + 'iwu'))

Can you predict the output of `main_solution("pcfumkoiuk")` 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": "pcfumkoiuk"}, "ref_output": "\u00abr\u00bb\u00abp\u00bb\u00abm\u00bb\u00abe\u00bb\u00abk\u00bbomoedciwu", "ref_code": "def main_solution(x):\n    return (func_15('rpmek') + ('omoedc' + 'iwu'))", "funcname": "main_solution"}
rule