You are given a code:

def main_solution(x):
    return func_20(func_5('chlwbp', 'hl'), func_13('ndnsck', '_'))

Can you predict the output of `main_solution("tyqkv")` 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": "tyqkv"}, "ref_output": "hnl_cdh_lnw_bsp_c_k", "ref_code": "def main_solution(x):\n    return func_20(func_5('chlwbp', 'hl'), func_13('ndnsck', '_'))", "funcname": "main_solution"}
rule