B3311331313231311331322331333132313331323131323223313223313123123111   >>    B331133131323131133132233133313231333132313132322331322331312312311   <<    B3311331313231311331322331333132313331323131323223313223313123123113   >>      B3311331313231311331322331333132313331323131323223313223313123123112   >>