Folk knitting in Estonia

Im putting the thumb on a pair of mittens from Nancy Bush’s folk knitting in estonia book. The thumb is supposed to have 30 stitches on it and it says to follow the chart like i did for the body of the mitt. By question is this; the chart is a 12 stitch repeat. Soooo so i just do the 12 stitch repeat twice and then do the next 6 stitches in the pattern and then start a the next row? It’s Anv’s mittens on page 65 is anyone has the book. Thanks all!

Isn’t it funny how sometimes all you need to do is write down your question and then your able to figure it out right away?