B3311331313231311331322331333132313231323331333131333133313232231221   >>    B331133131323131133132233133313231323132333133313133313331323223122   <<    B3311331313231311331322331333132313231323331333131333133313232231223   >>      B3311331313231311331322331333132313231323331333131333133313232231222   >>