D3313333121123313221333132213231323331323132313223313113313232233121   >>    D331333312112331322133313221323132333132313231322331311331323223312   <<    D3313333121123313221333132213231323331323132313223313113313232233123   >>      D3313333121123313221333132213231323331323132313223313113313232233122   >>