B3311331313231311331322331333132313331322121133133313331333131123313232121   >>    B331133131323131133132233133313231333132212113313331333133313112331323212   <<    B3311331313231311331322331333132313331322121133133313331333131123313232123   >>      B3311331313231311331322331333132313331322121133133313331333131123313232122   >>