1-1:
2-2:
3-3:
4-4:
5-5:
6-6:
7-7:
8-8:
9-9:
10-10:
11-25:
26-50:
51-100:
101-200:
201-300:
301-400:
401-500:
501-800:
801-1000:
1001: