1{"Put":{"state":"helloˇ world."}}
 2{"Key":"i"}
 3{"Key":"ctrl-o"}
 4{"Key":"v"}
 5{"Key":"b"}
 6{"Key":"r"}
 7{"Key":"l"}
 8{"Get":{"state":"ˇllllllworld.","mode":"Insert"}}
 9{"Key":"ctrl-o"}
10{"Key":"v"}
11{"Key":"f"}
12{"Key":"w"}
13{"Key":"d"}
14{"Get":{"state":"ˇorld.","mode":"Insert"}}