B3311331313231311331322331333132313233313231333131133133313221121221   >>    B331133131323131133132233133313231323331323133313113313331322112122   <<    B3311331313231311331322331333132313233313231333131133133313221121223   >>      B3311331313231311331322331333132313233313231333131133133313221121222   >>