You are given a code:

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

Can you predict the output of `main_solution("yqdjzihr")` 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": "yqdjzihr"}, "ref_output": "f-p-c-s-k-lyqdjzihrgucdpr", "ref_code": "def main_solution(x):\n    return (func_13('fpcskl', '-') + (x + 'gucdpr'))", "funcname": "main_solution"}
rule