B33113313132313113313223313331323133313232232111133132313331312111112212131   >>    B3311331313231311331322331333132313331323223211113313231333131211111221213   <<    B33113313132313113313223313331323133313232232111133132313331312111112212133   >>      B33113313132313113313223313331323133313232232111133132313331312111112212132   >>