D12121212121313231311331323112331323132313232213132313233313232111311   >>    D1212121212131323131133132311233132313231323221313231323331323211131   <<    D12121212121313231311331323112331323132313232213132313233313232111313   >>      D12121212121313231311331323112331323132313232213132313233313232111312   >>