You are given a code:

def main_solution(x):
    return func_20((x + 'niqguo'), func_15('zfnly'))

Can you predict the output of `main_solution("kvr")` 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": "kvr"}, "ref_output": "k\u00abvzr\u00bbn\u00abifq\u00bbg\u00abuno\u00bb\u00abl\u00bb\u00aby\u00bb", "ref_code": "def main_solution(x):\n    return func_20((x + 'niqguo'), func_15('zfnly'))", "funcname": "main_solution"}
rule