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int eSize =10;
size(400,400);
background(255);
noStroke();
//fill(0);
smooth();
for (int y=0; y<400; y+=30){
for(int x=0; x<400; x+=30){
fill(x,200,250);
rect(x,y,eSize,eSize);
}
}
stroke(255,225,225,220);
strokeWeight(20);
noFill();
ellipse(0,80,300,300);
ellipse(80,0,300,300);
stroke(189,225,231,235);
strokeWeight(20);
noFill();
ellipse(400,320,300,300);
ellipse(320,400,300,300);