9999,8999,7999, _________ 5999, 4999,3999
1500,1400,1300,1200, _________ 1000,900,800
1350,1380,1410,_________ ,1470,1500, 1530.
5150,5000, 4850,__________ 4,550,4400, 4250
3500,3000,2500_________ 1500,1000,500.
10,20,____,40,50,
540,570, _______ 630, 660,690,720,750 ,780
1440
6999
600
30
1100
4700
2000