You are given a code:

def main_solution(x):
    return func_20(func_13(x, '_'), func_15('hge'))

Can you predict the output of `main_solution("lscrczvh")` 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": "lscrczvh"}, "ref_output": "l\u00ab_hs\u00bb_\u00abcg_\u00bbr\u00ab_ec\u00bb_z_v_h", "ref_code": "def main_solution(x):\n    return func_20(func_13(x, '_'), func_15('hge'))", "funcname": "main_solution"}
rule