B3311331313231311331322331333132313331323131323223313223313123222221   >>    B331133131323131133132233133313231333132313132322331322331312322222   <<    B3311331313231311331322331333132313331323131323223313223313123222223   >>      B3311331313231311331322331333132313331323131323223313223313123222222   >>