You are given a code:

def main_solution(x):
    return (('kxszpm' + x) + func_4('onkj'))

Can you predict the output of `main_solution("yjdmapwk")` 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": "yjdmapwk"}, "ref_output": "kxszpmyjdmapwkonkj", "ref_code": "def main_solution(x):\n    return (('kxszpm' + x) + func_4('onkj'))", "funcname": "main_solution"}
rule