B3311331313231311331322331333131133133313111333133313331323331323221231221   >>    B331133131323131133132233133313113313331311133313331333132333132322123122   <<    B3311331313231311331322331333131133133313111333133313331323331323221231223   >>      B3311331313231311331322331333131133133313111333133313331323331323221231222   >>