B3311331313231311331322331333132322331311113313231323331323132313231322321   >>    B331133131323131133132233133313232233131111331323132333132313231323132232   <<    B3311331313231311331322331333132322331311113313231323331323132313231322323   >>      B3311331313231311331322331333132322331311113313231323331323132313231322322   >>