Shown with a cast-on count of 22 stitches.  

• Row 0 (RS): K3, yo wrapping yarn twice, *k1, yo, repeat from * to last 4 sts, k1, yo wrapping yarn twice, k3 (39 sts).
• Row 1: K3, (k1, p1) in next st, p15, pfb, p15, (k1, p1) in next st, k3 (42 sts).
• Row 2: 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 (44 sts).
• Row 3: K3, (k1, p1) in next st, purl to last 4 sts, (k1, p1) in next st, k3 (46 sts).
• Row 4: 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 (48 sts).
• Row 5: K3, (k1, p1) in next st, purl to last 4 sts, (k1, p1) in next st, k3 (50 sts).
• Row 6: 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 (52 sts).
• Row 7: K3, (k1, p1) in next st, purl to last 4 sts, (k1, p1) in next st, k3 (54 sts).
• Row 8: 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 (56 sts).
• Row 9: K3, (k1, p1) in next st, purl to last 4 sts, (k1, p1) in next st, k3 (58 sts).
• Row 10: 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 (60 sts).
• Row 11: K3, (k1, p1) in next st, purl to last 4 sts, (k1, p1) in next st, k3 (62 sts).
• Row 12: 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 (64 sts).
• Row 13: K3, (k1, p1) in next st, purl to last 4 sts, (k1, p1) in next st, k3 (66 sts).