D231123132333132233131323223313233313231211113313231323133311231   >>    D23112313233313223313132322331323331323121111331323132313331123   <<    D231123132333132233131323223313233313231211113313231323133311233   >>      D231123132333132233131323223313233313231211113313231323133311232   >>