D231123132333132233131323223313231323132322113313233313231322221   >>    D23112313233313223313132322331323132313232211331323331323132222   <<    D231123132333132233131323223313231323132322113313233313231322223   >>      D231123132333132233131323223313231323132322113313233313231322222   >>