D121212121213132313113313231123313231323132322131323132313232213221   >>    D12121212121313231311331323112331323132313232213132313231323221322   <<    D121212121213132313113313231123313231323132322131323132313232213223   >>      D121212121213132313113313231123313231323132322131323132313232213222   >>