Shown with a cast-on count of 30 stitches.  

• Rows 1 and 17 (RS): K3, *ssk, yo, k2tog, k6, repeat from * to last 7 sts, ssk, yo, k2tog, k3 (multiple of 9 sts, plus 9).
• Rows 2, 4, 6, 8, 18, 20, 22, and 24: P4, *(k1, p1) in next st, p8, repeat from * to last 5 sts, (k1, p1) in next st, p4 (multiple of 10 sts, plus 10).
• Rows 3 and 19: K3, *k2tog, yo, ssk, k6, repeat from * to last 7 sts, k2tog, yo, ssk, k3 (multiple of 9 sts, plus 9).
• Rows 5 and 21: K2, *k2tog, k1, yo, k1, ssk, k4, repeat from * to last 8 sts, k2tog, k1, yo, k1, ssk, k2 (multiple of 9 sts, plus 9).
• Rows 7 and 23: K1, *k2tog, k2, yo, k2, ssk, k2, repeat from * to last 9 sts, k2tog, k2, yo, k2, ssk, k1 (multiple of 9 sts, plus 9).
• Row 9: Yo, *k2tog, k6, ssk, yo, repeat from * to last 10 sts, k2tog, k6, ssk, yo (multiple of 9 sts, plus 10).
• Rows 10, 12, 14, and 16: P9, *(k1, p1) in next st, p8, repeat from * to last st, p1 (multiple of 10 sts, plus 10).
• Row 11: Yo, *ssk, k6, k2tog, yo, repeat from * to last 10 sts, ssk, k6, k2tog, yo (multiple of 9 sts, plus 10).
• Row 13: Yo, k1, *ssk, k4, k2tog, k1, yo, k1, repeat from * to last 9 sts, ssk, k4, k2tog, k1, yo (multiple of 9 sts, plus 10).
• Row 15: Yo, k2, *ssk, k2, k2tog, k2, yo, k2, repeat from * to last 8 sts, ssk, k2, k2tog, k2, yo (multiple of 9 sts, plus 10).
• Row 25: *K2tog, k3, yo, k3, ssk, repeat from * (multiple of 9 sts).
• Row 26: *P4, (k1, p1) in next st, p4, repeat from * (multiple of 10 sts).
• Row 27: *K5, yo, k5, repeat from * (multiple of 11 sts).
• Row 28: *P5, (k1, p1) in next st, p5, repeat from * (multiple of 12 sts).
• Row 29: *K6, yo, k6, repeat from * (multiple of 13 sts).
• Row 30: *P6, (k1, p1) in next st, p6, repeat from * (multiple of 14 sts).
• Row 31: *K7, yo, k7, repeat from * (multiple of 15 sts).
• Row 32: *P7, (k1, p1) in next st, p7, repeat from * (multiple of 16 sts).
• Row 33: *K8, yo, k8, repeat from * (multiple of 17 sts).
• Row 34: *P8, (k1, p1) in next st, p8, repeat from * (multiple of 18 sts).
• Row 35: Yo, *k18, yo, repeat from * (multiple of 19 sts, plus 1).
• Row 36: P19, *(k1, p1) in next st, p18, repeat from * to last st, p1 (multiple of 20 sts, plus 20).
• Row 37: Yo, *ssk, k16, k2tog, yo, repeat from * to last 20 sts, ssk, k16, k2tog, yo (multiple of 19 sts, plus 20).