How do you crochet a y or a n?

Y stitch as noted on my web site Crochet Cabana is:

1) Yarn over twice, insert hook into top two loops of stitch (unless otherwise specified), yo, pull through stitch (4 lps on hk)

2) (Yarn over, pull through 2 lps) 3 times (triple crochet made)

3) Chain 2 or 3, yo, insert hook in center of triple crochet, yo and pull through

4) (Yarn over and pull through 2 loops) twice