:nth-child(2n+1) {}
:nth-child(2n + 1) {}
:nth-child(-2n   - 3) {}
:nth-child(+2n   - 3) {}
:nth-child(2n
 +
 
   1) {}
:nth-child(
    2n+ 1) {}
:nth-child(
    2n) {}

:nth-child(
odd) {}
:nth-child(
    even) {}
:nth-child(
    102) {}
:nth-child(
    -102) {}


:nth-child(2n+1 of li, .test) {}
:nth-child(
    
    2n+1 of 
    li,
    
    .test) {}

:nth-child(2n+1
    of
    li, .test) {}
:nth-child(2n+1
        of
        li, .test, .anotherLongClassName, #aSelectorLongEnoughToBreak, .OverMultipleLinesWithIndentation) {}