Shown with a cast-on count of 45 stitches.  

• Row 1 (RS): Yo, ssk, k1, *k4, k2tog, yo, k1, [yo, ssk] 5 times, k1, repeat from * to last 6 sts, k4, k2tog, yo.
• Rows 2, 4, 6, 8, 10, 12, 14, and 16: Purl.
• Row 3: K1, yo, ssk, *k3, k2tog, yo, k1, [yo, ssk] 6 times, repeat from * to last 6 sts, k3, k2tog, yo, k1.
• Row 5: K2, yo, *ssk, k1, k2tog, yo, k3, [yo, ssk] 4 times, k2, yo, repeat from * to last 7 sts, ssk, k1, k2tog, yo, k2.
• Row 7: K3, *yo, sl2-k1-p2sso, yo, k3, [yo, ssk] 5 times, k2, repeat from * to last 6 sts, yo, sl2-k1-p2sso, yo, k3.
• Row 9: K2, k2tog, *yo, k1, yo, ssk, k3, [yo, ssk] 4 times, k2, k2tog, repeat from * to last 5 sts, yo, k1, yo, ssk, k2.
• Row 11: K1, k2tog, yo, *k3, yo, ssk, k1, [yo, ssk] 5 times, k2tog, yo, repeat from * to last 6 sts, k3, yo, ssk, k1.
• Row 13: K2tog, yo, k1, *k4, yo, ssk, k1, [yo, ssk] 4 times, k2tog, yo, k1, repeat from * to last 6 sts, k4, yo, ssk.
• Row 15: Knit.