You are given a code:

def main_solution(x):
    return func_13((x + 'ezcvpw'), '-')

Can you predict the output of `main_solution("omqqceye")` 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": "omqqceye"}, "ref_output": "o-m-q-q-c-e-y-e-e-z-c-v-p-w", "ref_code": "def main_solution(x):\n    return func_13((x + 'ezcvpw'), '-')", "funcname": "main_solution"}
rule