You are given a code:

def main_solution(x):
    return func_20(('qfekk' + 'omtp'), func_15('fqy'))

Can you predict the output of `main_solution("bzkt")` 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": "bzkt"}, "ref_output": "q\u00abffe\u00bbk\u00abkqo\u00bbm\u00abtyp\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('qfekk' + 'omtp'), func_15('fqy'))", "funcname": "main_solution"}
rule