You are given a code:

def main_solution(x):
    return func_20('ckv', 'jwjsxc')

Can you predict the output of `main_solution("tqhzkfcs")` 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": "tqhzkfcs"}, "ref_output": "cjkwvjsxc", "ref_code": "def main_solution(x):\n    return func_20('ckv', 'jwjsxc')", "funcname": "main_solution"}
rule