You are given a code:

def main_solution(x):
    return func_5('vlfa', 'tldc')

Can you predict the output of `main_solution("nfzsafrgm")` 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": "nfzsafrgm"}, "ref_output": "tldcvlfa", "ref_code": "def main_solution(x):\n    return func_5('vlfa', 'tldc')", "funcname": "main_solution"}
rule