[0,20,40,60,80,100,120,140,160,180,200,220,240, 260,280,300,320,340,360,380,400,420,440,460,480, 500,520,540,560,580,600,620,640,660,680,700,720, 740,760,780,800,820,840,860,880,900,920,940,960, 980,1000]