B3311331313231311331322331333132313331323133313233313133313232213331313213221   >>    B331133131323131133132233133313231333132313331323331313331323221333131321322   <<    B3311331313231311331322331333132313331323133313233313133313232213331313213223   >>      B3311331313231311331322331333132313331323133313233313133313232213331313213222   >>