yoh twice, insert hook into 3rd chain from hook, yoh again.

draw yarn through chain, yoh again.  4 loops on hook

draw through first 2 loops on hook, yoh again.  (3 loops left)

draw through next 2 loops on hook, yoh again.  (2 loops left)

draw through last 2 loops on hook.

repeat in the rest of the chains.

yoh 3 times, insert hook into 3rd chain from hook, yoh again.

yoh, draw yarn through chain.  4 loops on hook

yoh again, draw through first 2 loops on hook.  (3 loops left)

yoh again, draw through next 2 loops on hook.  (2 loops left)

yoh again, draw through last 2 loops on hook.

repeat in the rest of the chains.