3 Rules from the stylesheet:
5 #a:nth-child(n-1) { color: green; }
6 #b:nth-child(n- 10) { color: green; }
7 #g:nth-child(-n-1) { color: green; }
8 #h:nth-child(-n- 10) { color: green; }
10 - 1) { color: green; }
12 +13) { color: green; }
15 #a:nth-child(n-1) { color: green; }
16 #b:nth-child(n- 10) { color: green; }
17 #g:nth-child(-n-1) { color: green; }
18 #h:nth-child(-n- 10) { color: green; }
20 - 1) { color: green; }
22 +13) { color: green; }