Knit Purl 37 in the round

PATTERN IN THE ROUND
Cast on any number of stitches.
Round 1: Color A, knit.
Repeat 9 times more.
Round 11: Change to color B, knit.
Round 12: Color 12, purl.
Repeat rounds 11-12 4 times more.
Repeat rows 1-20.

Worked flat, see Knit Purl 37: Stockinette and Garter Stripes