B3311331313231311331322331333132313331322331323133313233311232223221   >>    B331133131323131133132233133313231333132233132313331323331123222322   <<    B3311331313231311331322331333132313331322331323133313233311232223223   >>      B3311331313231311331322331333132313331322331323133313233311232223222   >>