You are given a code:

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

Can you predict the output of `main_solution("lclnieikdb")` 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": "lclnieikdb"}, "ref_output": "l-c-l-n-i-e-i-k-d-bw_f_w_e_i_p", "ref_code": "def main_solution(x):\n    return (func_13(x, '-') + func_13('wfweip', '_'))", "funcname": "main_solution"}
rule