How could I refine this script with only one Graphic var

I want to create 1 variable for the Graphic’s instead of the current script wit 4. I’ve been using an array with loop but t no avail…Here is the working version:

 var buttons:Sprite = new Sprite();
 var gr4:Graphics = buttons.graphics;
 var gr5:Graphics = buttons.graphics;
 var gr6:Graphics = buttons.graphics;
 var gr7:Graphics = buttons.graphics;
 var gr8:Graphics = buttons.graphics;
 gr4.beginFill(0xFE9900, .7);
 gr4.drawEllipse(0, 0, 41, 21);
 gr5.beginFill(0xCC6566, .7);
 gr5.drawEllipse(0, 30, 41, 21);
 gr6.beginFill(0xCB99CC, .7);
 gr6.drawEllipse(0, 60, 41, 21);
 gr7.beginFill(0xCB99CC, .7);
 gr7.drawEllipse(0, 90, 41, 21);
 gr8.beginFill(0xCB99CC, .7);
 gr8.drawEllipse(0, 120, 41, 21);
 buttons.x = 161;
 buttons.y = 133;
 addChild(buttons);