a=eks,b=wye,i=4,x=0.38139939387114097,y=0.13418874328430463
a=wye,b=pan,i=5,x=0.5732889198020006,y=0.8636244699032729
a=zee,b=wye,i=8,x=0.5985540091064224,y=0.976181385699006
a=pan,b=wye,i=10,x=0.5026260055412137,y=0.9526183602969864
