Help w knitting pattern instruction

(K10,{11, 12}, kfb) 8 times.

What are you asking?

It would help if you’d tell us what you’re knitting, give the pattern name and a link if at all possible.

the numbers in the { } are the different sizes, so K10 for small, K11 for medium and K12 for large, then knit one stitch as kfb, then repeat 8 times. So for small that would be K10 kfb, K10 kfb, etc.