Slip Stitch Knitting 15: Brick

PATTERN
Cast on a multiple of 6, +3.
Row 1 (RS): Color A, knit.
Row 2: Color A, purl.
Row 3: Color B, k4, *sl 1 wyib, k5, repeat from * to last 5 sts, sl1 wyib, k4.
Rows 4, and 6: Color B, k4, *sl 1 wyif, k5, repeat from * to last 5 sts, sl 1 wyif, k4.
Row 5: Color B, k4, *sl 1 wyib, p5, repeat from * to last 5 sts, sl1 wyib, p4.
Row 7: Color A, knit.
Row 8: Color A, purl.
Row 9: Color B, k1, *sl 1 wyib, k5, repeat from * to last 2 sts, sl 1 wyib, k1.
Rows 10, and 12: Color B, k1, *sl 1 wyif, k5, repeat from * to last 2 sts, sl 1 wyif, k1.
Row 11: Color B, k1, *sl 1 wyib, p5, repeat from * to last 2 sts, sl 1 wyib, p1.
Rep Rows 1 - 12.