B3311331313231311331322331333131133133313231133133313232212121121131   >>    B331133131323131133132233133313113313331323113313331323221212112113   <<    B3311331313231311331322331333131133133313231133133313232212121121133   >>      B3311331313231311331322331333131133133313231133133313232212121121132   >>