1{"Put":{"state":"heˇllo\n"}}
 2{"Key":"y"}
 3{"Key":"y"}
 4{"Key":"i"}
 5{"Key":"ctrl-r"}
 6{"Key":"\""}
 7{"Get":{"state":"hehello\nˇllo\n","mode":"Insert"}}
 8{"Key":"ctrl-r"}
 9{"Key":"x"}
10{"Key":"ctrl-r"}
11{"Key":"escape"}
12{"Get":{"state":"hehello\nˇllo\n","mode":"Insert"}}