B3311331313231311331322331333132313233313231333131123313331323132322333223331   >>    B331133131323131133132233133313231323331323133313112331333132313232233322333   <<    B3311331313231311331322331333132313233313231333131123313331323132322333223333   >>      B3311331313231311331322331333132313233313231333131123313331323132322333223332   >>