:: 2 color(a & b) braid pattern ::

worked in the round on an even number of stitches,
set up round :: * k1 a, k1 b * repeat around.

1st braiding round :: purl a colored stitches with a, b with b, always having the yarn of the stitch go over the yarn of the previous stitch.

2nd braiding round :: purl a colored stitches with a, b with b, always having the yarn of the stitch go under the yarn of the previous stitch.