You are given a code:

def main_solution(x):
    return ('spualm' + 'chot')

Can you predict the output of `main_solution("vfmyinyg")` 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": "vfmyinyg"}, "ref_output": "spualmchot", "ref_code": "def main_solution(x):\n    return ('spualm' + 'chot')", "funcname": "main_solution"}
rule