D231123132333132233131323223313231323133313132213231323132322221   >>    D23112313233313223313132322331323132313331313221323132313232222   <<    D231123132333132233131323223313231323133313132213231323132322223   >>      D231123132333132233131323223313231323133313132213231323132322222   >>