D3313333121123313221333132213231323331323132322133313233313231323221111   >>    D331333312112331322133313221323132333132313232213331323331323132322111   <<    D3313333121123313221333132213231323331323132322133313233313231323221113   >>      D3313333121123313221333132213231323331323132322133313233313231323221112   >>