D12121212121313231311331323112331323132313232213331323331323331313221321   >>    D1212121212131323131133132311233132313231323221333132333132333131322132   <<    D12121212121313231311331323112331323132313232213331323331323331313221323   >>      D12121212121313231311331323112331323132313232213331323331323331313221322   >>