You are given a code:

def main_solution(x):
    return func_20('gmp', 'bml')

Can you predict the output of `main_solution("kgjowvhlxa")` 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": "kgjowvhlxa"}, "ref_output": "gbmmpl", "ref_code": "def main_solution(x):\n    return func_20('gmp', 'bml')", "funcname": "main_solution"}
rule