B3311331313231311331322331333132313331322331323133313311232313232112323331   >>    B331133131323131133132233133313231333132233132313331331123231323211232333   <<    B3311331313231311331322331333132313331322331323133313311232313232112323333   >>      B3311331313231311331322331333132313331322331323133313311232313232112323332   >>