Shown with a cast-on count of 25 stitches.  

• Row 1 (RS): K3, ssk, yo, k5, [yo, k1] 5 times, yo, k5, yo, k2tog, k3 (31 sts).
• Rows 2, 4, and 6: K3, p25, k3.
• Row 3: K3, ssk, yo, ssk, k1, [k2tog, yo] twice, k3, yo, k1, yo, k3, [yo, ssk] twice, k1, k2tog, yo, k2tog, k3.
• Row 5: K3, ssk, yo, k3tog, yo, k2tog, yo, k5, yo, k1, yo, k5, yo, ssk, yo, sl1-k2tog-psso, yo, k2tog, k3.
• Row 7: K3, k3tog, yo, k2tog, yo, k1, yo, ssk, k1, k2tog, yo, sl2-k1-p2sso, yo, ssk, k1, k2tog, yo, k1, yo, ssk, yo, sl1-k2tog-psso, k3 (27 sts).
• Row 8: K3, p21, k3.
• Row 9: K4, k2tog, yo, k3, yo, k3tog, yo, sl2-k1-p2sso, yo, sl1-k2tog-psso, yo, k3, yo, ssk, k4 (25 sts).
• Row 10: K3, p19, k3.