,,aaa,bbb,ccc,ddd
x,3,1,10,10,
y,10,12,4,5,
x,4,2,11,20,
y,12,15,6,4,
x,5,3,12,30,
y,19,21,9,2,
x,6,4,13,40,
y,24,26,12.2,1.1,
