You are given a code:

def main_solution(x):
    return ('geaomk' + 'ubnic')

Can you predict the output of `main_solution("eya")` 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": "eya"}, "ref_output": "geaomkubnic", "ref_code": "def main_solution(x):\n    return ('geaomk' + 'ubnic')", "funcname": "main_solution"}
rule