You are given a code:

def main_solution(x):
    return ('ahkya' + 'ztzin')

Can you predict the output of `main_solution("tgocoez")` 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": "tgocoez"}, "ref_output": "ahkyaztzin", "ref_code": "def main_solution(x):\n    return ('ahkya' + 'ztzin')", "funcname": "main_solution"}
rule