B3311331313231311331322331333132333133313221133132313231333132313232212323221   >>    B331133131323131133132233133313233313331322113313231323133313231323221232322   <<    B3311331313231311331322331333132333133313221133132313231333132313232212323223   >>      B3311331313231311331322331333132333133313221133132313231333132313232212323222   >>