B3311331313231311331322331333131133133313231133133313232213232221   >>    B331133131323131133132233133313113313331323113313331323221323222   <<    B3311331313231311331322331333131133133313231133133313232213232223   >>      B3311331313231311331322331333131133133313231133133313232213232222   >>