D12121212121313233313123231323223313132322331323223313111122112321   >>    D1212121212131323331312323132322331313232233132322331311112211232   <<    D12121212121313233313123231323223313132322331323223313111122112323   >>      D12121212121313233313123231323223313132322331323223313111122112322   >>