20*20, 30*30, 40*40, 50*50, 60*60, 70*70, 80*80, 90*90, 100*100, 110*110, 120*120, 30*20, 30*40, 40*50, 50*70, 90*60, 120*80, 150*100, 180*120, 80*60, 107*80, 133*100, 160*120, 20*30, 40*30, 50*40, 70*50, 60*90, 80*120, 100*150, 120*180, 60*80, 80*107, 100*133, 120*160