D1212132333132233131323222313231323133313231322331323131133132313232121   >>    D121213233313223313132322231323132313331323132233132313113313231323212   <<    D1212132333132233131323222313231323133313231322331323131133132313232123   >>      D1212132333132233131323222313231323133313231322331323131133132313232122   >>