You are given a code:

def main_solution(x):
    return func_13(func_20(x, 'acjfnc'), '-')

Can you predict the output of `main_solution("crqxwpxtvm")` 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": "crqxwpxtvm"}, "ref_output": "c-a-r-c-q-j-x-f-w-n-p-c-x-t-v-m", "ref_code": "def main_solution(x):\n    return func_13(func_20(x, 'acjfnc'), '-')", "funcname": "main_solution"}
rule