You are given a code:

def main_solution(x):
    return (func_1(x, 2) + ('zyff' + 'tphxze'))

Can you predict the output of `main_solution("gcgayr")` 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": "gcgayr"}, "ref_output": "gcgayrgcgayrzyfftphxze", "ref_code": "def main_solution(x):\n    return (func_1(x, 2) + ('zyff' + 'tphxze'))", "funcname": "main_solution"}
rule