You are given a code:

def main_solution(x):
    return func_5(func_19('ttxqj', 2), 'nglh')

Can you predict the output of `main_solution("koevwv")` 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": "koevwv"}, "ref_output": "nglhxqjtt", "ref_code": "def main_solution(x):\n    return func_5(func_19('ttxqj', 2), 'nglh')", "funcname": "main_solution"}
rule