You are given a code:

def main_solution(x):
    return func_20(func_1(x, 4), func_15('nljati'))

Can you predict the output of `main_solution("izofgx")` 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": "izofgx"}, "ref_output": "i\u00abzno\u00bbf\u00abglx\u00bbi\u00abzjo\u00bbf\u00abgax\u00bbi\u00abzto\u00bbf\u00abgix\u00bbizofgx", "ref_code": "def main_solution(x):\n    return func_20(func_1(x, 4), func_15('nljati'))", "funcname": "main_solution"}
rule