You are given a code:

def main_solution(x):
    return func_1(('xhr' + 'qxcrbo'), 3)

Can you predict the output of `main_solution("kdavnjnuzb")` 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": "kdavnjnuzb"}, "ref_output": "xhrqxcrboxhrqxcrboxhrqxcrbo", "ref_code": "def main_solution(x):\n    return func_1(('xhr' + 'qxcrbo'), 3)", "funcname": "main_solution"}
rule