Shown with a cast-on count of 43 stitches.  

• Row 1 (RS): K2tog, k6, *k5, sl2-k1-p2sso, k6, repeat from * to last 7 sts, k5, k2tog (multiple of 12 sts, plus 13).
• Rows 2, 4, and 6: Purl.
• Row 3: K2tog, k5, *k4, sl2-k1-p2sso, k5, repeat from * to last 6 sts, k4, k2tog (multiple of 10 sts, plus 11).
• Row 5: K2tog, k4, *k3, sl2-k1-p2sso, k4, repeat from * to last 5 sts, k3, k2tog (multiple of 8 sts, plus 9).
• Round 7: K2, k2tog, yo, k1, *yo, ssk, k3, k2tog, yo, k1, repeat from * to last 4 sts, yo, ssk, k2.
• Round 8: K1, k2tog, yo, k2, *k1, yo, ssk, k1, k2tog, yo, k2, repeat from * to last 4 sts, k1, yo, ssk, k1.
• Round 9: K2tog, yo, k3, *k2, yo, sl2-k1-p2sso, yo, k3, repeat from * to last 4 sts, k2, yo, ssk.
• Round 10: K1, yo, k2tog, k2, *k1, k2tog, yo, k1, yo, ssk, k2, repeat from * to last 4 sts, k1, k2tog, yo, k1.
• Round 11: K2, yo, k2tog, k1, *k2tog, yo, k3, yo, ssk, k1, repeat from * to last 4 sts, k2tog, yo, k2.
• Round 12: K3, yo, sl2-k1-p2sso, *yo, k5, yo, sl2-k1-p2sso, repeat from * to last 3 sts, yo, k3.