You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_19('ygleqa', 2))

Can you predict the output of `main_solution("zrvohibnga")` 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": "zrvohibnga"}, "ref_output": "\u00ablze\u00bbq\u00abary\u00bbg\u00abv\u00bb\u00abo\u00bb\u00abh\u00bb\u00abi\u00bb\u00abb\u00bb\u00abn\u00bb\u00abg\u00bb\u00aba\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_19('ygleqa', 2))", "funcname": "main_solution"}
rule