D12121212121313231311331323112331323132313232213331323331323211232333131   >>    D1212121212131323131133132311233132313231323221333132333132321123233313   <<    D12121212121313231311331323112331323132313232213331323331323211232333133   >>      D12121212121313231311331323112331323132313232213331323331323211232333132   >>