Two-Color Brioche Pattern

How to knit
SL1 Yof: With working yarn in front, slip the next stitch purl wise, then bring the yarn over the needle (and over the slipped stitch) then back to the front and under the needle in position to purl the following stitch.
Yf SL1 Yo: Bring the working yarn under the needle to the front of the work, slip the next stitch purl wise, then bring the yarn over the needle (and over the slipped stitch) to the back in position to work the following stitch.
BRK: Knit the stitch (which was slipped in the row before) together with its yarn over.
BRP: Purl the stitch (which was slipped in the row before) together with its yarn over.

Pattern
Work on a pair of double point needles or on a circular needle.
Cast on loosely an odd number of sts with color A.
Set-up row: Color B, K1, *Yf SL1 Yo, K1; rep from * to end.
Do not turn, slide sts back to opposite end of needle.
Row 1: Color A, SL1, *BRP1, SL1 Yof; rep from * to last 2 sts, BRP1, SL1. Turn work.
Row 2: Color B, P1, *SL1 Yof, BRP1; rep from * to last 2 sts, SL1 Yof, P1.
Do not turn, slide sts back to opposite end of needle.
Row 3: Color A, SL1, *BRK1, Yf SL1 Yo; rep from * to last 2 sts, BRK1, SL1. Turn work.
Row 4: Color B, K1, *Yf SL1 Yo, BRK1; rep from * to last 2 sts, Yf SL1 Yo, K1.
Do not turn, slide sts back to opposite end of needle.
Rep Rows 1-4.