B3311331313231311331322331333132313331323133313233313133313221322321   >>    B331133131323131133132233133313231333132313331323331313331322132232   <<    B3311331313231311331322331333132313331323133313233313133313221322323   >>      B3311331313231311331322331333132313331323133313233313133313221322322   >>