[0,20,40,60,80,200,220,240,260,280,400,420,440, 460,480,600,620,640,660,680,800,820,840,860,880, 2000,2020,2040,2060,2080,2200,2220,2240,2260,2280, 2400,2420,2440,2460,2480,2600,2620,2640,2660,2680, 2800,2820,2840]