You are given a code:

def main_solution(x):
    return func_20(func_9('kxelgp'), func_13('gorlci', '_'))

Can you predict the output of `main_solution("tvrq")` 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": "tvrq"}, "ref_output": "kgx_eol_grp_plg_lce_xik", "ref_code": "def main_solution(x):\n    return func_20(func_9('kxelgp'), func_13('gorlci', '_'))", "funcname": "main_solution"}
rule