Something is missing in my code can any body help me?

My original code is like this:

       void DoMyWindow3(int windowID)
    {    
    GUI.Label(new Rect(0,0,400,40), " Length  Timeperiod   Count"  ,fontstyle);
    GUI.Label(new Rect(0,50,400,40), Pendulum2.threevalues[0].ToString() ,fontstyle);
    GUI.Label(new Rect(0,100,400,40), Pendulum2.threevalues[1].ToString() ,fontstyle);
    GUI.Label(new Rect(0,150,400,40), Pendulum2.threevalues[2].ToString() ,fontstyle);
     }

If i am using above code my output is perfect. that is only for three fields. if i have n number of fields. How will i write structure.

  void DoMyWindow3(int windowID)
   {    
     GUI.Label(new Rect(0,0,400,40), " Length  Timeperiod   Count"  ,fontstyle);
     foreach(string s in Pendulum2.threevalues) {
      GUI.Label(new Rect(0,hieght,400,40), s ,fontstyle);
      hieght = hieght+50;
        }

Here every time same label is coming down the old label is missing. I want both old and new label. Can please help me.

Thanks In Advance