D12121212121313231311331323112331323132313232213331323223313112111   >>    D1212121212131323131133132311233132313231323221333132322331311211   <<    D12121212121313231311331323112331323132313232213331323223313112113   >>      D12121212121313231311331323112331323132313232213331323223313112112   >>