a:nth-child(n+3) { color: red; }
b:nth-child(2n+1) { color: red; }
c:nth-child(-n+3) { color: red; }
d:nth-child(2n-1) { color: red; }
e:nth-child(odd) { color: red; }
f:nth-child(2n) { color: red; }
g:nth-child( +3n - 2 ) { color: red; }
h:nth-child(5) { color: red; }
i:nth-of-type(2N+1) { color: red; }
j:nth-child(2n + 1 of li.important) { color: red; }
k:nth-child(2n - 1) { color: red; }
l:nth-child(2n -1) { color: red; }
m:nth-child(2n- 1) { color: red; }
n:nth-child(ODD) { color: red; }
o:nth-child(N) { color: red; }
p:nth-child(2N) { color: red; }
q:nth-last-child(N+3) { color: red; }
r:nth-child(0n+5) { color: red; }
s:nth-child(2n+1   of   LI.foo) { color: red; }
