B3311331313231311331322331333132313331322121133133313331333133313232221133131   >>    B331133131323131133132233133313231333132212113313331333133313331323222113313   <<    B3311331313231311331322331333132313331322121133133313331333133313232221133133   >>      B3311331313231311331322331333132313331322121133133313331333133313232221133132   >>