Video tutorial :

 

Multiple of 2

Row 1 : Pull up lp in 2nd chain from hook and each accross

Row 2: *yo, pull through 2 lps on hk; rep from *to end.

Row 3:  Chain 3 , /pull up lp, 3ch/ repeat to end

Row 4:  *yo, pull through 2 lps on hk; rep from *to end.

Rep rows 3-4.