a=wye,b=wye,i=3,x=0.20460330576630303,y=0.33831852551664776
a=eks,b=wye,i=4,x=0.38139939387114097,y=0.13418874328430463
a=eks,b=zee,i=7,x=0.6117840605678454,y=0.1878849191181694
a=hat,b=wye,i=9,x=0.03144187646093577,y=0.7495507603507059
