B3311331313231311331322331333132313233313231333131333133313232233131332321   >>    B331133131323131133132233133313231323331323133313133313331323223313133232   <<    B3311331313231311331322331333132313233313231333131333133313232233131332323   >>      B3311331313231311331322331333132313233313231333131333133313232233131332322   >>