D12121212121313231311331323112331323132313232213113313132323221   >>    D1212121212131323131133132311233132313231323221311331313232322   <<    D12121212121313231311331323112331323132313232213113313132323223   >>      D12121212121313231311331323112331323132313232213113313132323222   >>