You have a 3-stitch leeway for the first 10 rows of cable chart A.
Once you get to row 11, you won't have enough stitches for the cable that starts on the edge. I'd double check the picture, but probably when you get to that point you just work those stitches in stockinette.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry