Textured Knitting 29: Tiny Bobble

PATTERN
Cast on an odd number of stitches.
Rows 1 and 3 (RS): Color A, knit.
Rows 2 and 4: Color A, purl.
Row 5: Color B, k1, *sl1 wyib, (k1, yo, k1) all into the next st; repeat from * to last 2 sts, sl1 wyib, k1.
Row 6: Color B, p1, *sl1 wyib, k3tog-tbl; repeat from * to last 2 sts, sl 1wyib, p1.
Repeat rows 1-6.