B3311331313231311331322331333132313331323133313233313133313231232322321   >>    B331133131323131133132233133313231333132313331323331313331323123232232   <<    B3311331313231311331322331333132313331323133313233313133313231232322323   >>      B3311331313231311331322331333132313331323133313233313133313231232322322   >>