Shown with a cast-on count of 30 stitches.  

• Row 1 (RS): K3, yo wrapping yarn twice, *p1, k2, k2tog, yo, k2, yo, ssk, k2, p1, repeat from * to last 3 sts, yo wrapping yarn twice, k3 (multiple of 12 sts, plus 8).
• Rows 2, 4, 6, 8, 10, and 12: K3, (k1, p1) in next st, purl to last 4 sts, (k1, p1) in next st, k3 (2 more sts).
• Row 3: K3, yo wrapping yarn twice, k1, p1, *p1, k1, k2tog, yo, k4, yo, ssk, k1, p1, repeat from * to last 5 sts, p1, k1, yo wrapping yarn twice, k3 (multiple of 12 sts, plus 12).
• Row 5: K3, yo wrapping yarn twice, k3, p1, *p1, k2tog, yo, k2, p2, k2, yo, ssk, p1, repeat from * to last 7 sts, p1, k3, yo wrapping yarn twice, k3 (multiple of 12 sts, plus 16).
• Row 7: K3, yo wrapping yarn twice, k1, yo, ssk, k2, p1, *p1, k2, k2tog, yo, k2, yo, ssk, k2, p1, repeat from * to last 9 sts, p1, k2, k2tog, yo, k1, yo wrapping yarn twice, k3 (multiple of 12 sts, plus 20).
• Row 9: K3, yo wrapping yarn twice, k4, yo, ssk, k1, p1, *p1, k1, k2tog, yo, k4, yo, ssk, k1, p1, repeat from * to last 11 sts, p1, k1, k2tog, yo, k4, yo wrapping yarn twice, k3 (multiple of 12 sts, plus 24).
• Row 11: K3, yo wrapping yarn twice, k3, p2, k2, yo, ssk, p1, *p1, k2tog, yo, k2, p2, k2, yo, ssk, p1, repeat from * to last 13 sts, p1, k2tog, yo, k2, p2, k3, yo wrapping yarn twice, k3 (multiple of 12 sts, plus 28).