B3311331313231311331322331333132333112323132333132322331323132313231221   >>    B331133131323131133132233133313233311232313233313232233132313231323122   <<    B3311331313231311331322331333132333112323132333132322331323132313231223   >>      B3311331313231311331322331333132333112323132333132322331323132313231222   >>