B3311331313231311331322331333132313331322121133133313331333131333231221   >>    B331133131323131133132233133313231333132212113313331333133313133323122   <<    B3311331313231311331322331333132313331322121133133313331333131333231223   >>      B3311331313231311331322331333132313331322121133133313331333131333231222   >>