B3311331313231311331322331333132313331322331323133313331313233231323222221   >>    B331133131323131133132233133313231333132233132313331333131323323132322222   <<    B3311331313231311331322331333132313331322331323133313331313233231323222223   >>      B3311331313231311331322331333132313331322331323133313331313233231323222222   >>