0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | ... | 970
0 | 10 | 20 | 30
0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | ... | 290
0 | 10