B3311331313231311331322331333132322331322112331323132322331333132212311   >>    B331133131323131133132233133313232233132211233132313232233133313221231   <<    B3311331313231311331322331333132322331322112331323132322331333132212313   >>      B3311331313231311331322331333132322331322112331323132322331333132212312   >>