Pomatomus Socks

[Bonzai]

Hi- This Pomatomus sock is just not coming together for me. Can someone explain it to me? I understand what the chart is saying, but but I'm having a hard time knitting it. I just finished another pair of socks designed by Cookie A. and loved them.

Thanks-

[suzeeq]

What don't you understand about it? The main st is a twisted rib (ktbl) with the YOs moving over one st every round, then moving back. Or maybe it's every other round, but that's it.