B3311331313231311331322331333132313331322121133133313331333131333133311211331   >>    B331133131323131133132233133313231333132212113313331333133313133313331121133   <<    B3311331313231311331322331333132313331322121133133313331333131333133311211333   >>      B3311331313231311331322331333132313331322121133133313331333131333133311211332   >>