Shown with a cast-on count of 30 stitches.  

• Row 1 (RS): K3, sl1-k2tog-psso, k8, k3tog, k3, 1-to-5 inc, k3, sl1-k2tog-psso, k3 (28 sts).
• Rows 2, 4, 6, 8, 10, 12, 14, and 16: K3, purl to last 3 sts, k3.
• Row 3: K3, sl1-k2tog-psso, k7, k3tog, k2, 1-to-5 inc, k2, sl1-k2tog-psso, k4 (26 sts).
• Row 5: K3, sl1-k2tog-psso, k6, k3tog, k1, 1-to-5 inc, k1, sl1-k2tog-psso, k5 (24 sts).
• Row 7: K3, sl1-k2tog-psso, k5, k3tog, 1-to-5 inc, sl1-k2tog-psso, k6 (22 sts).
• Row 9: K3, k4, k1, sl1-k2tog-psso, k3, k3tog, knit (18 sts).
• Row 11: K3, sl1-k2tog-psso, k6, k3tog, k3 (14 sts).
• Row 13: K3, sl1-k2tog-psso, k5, k3tog (10 sts).
• Row 15: K3, sl1-k2tog-psso, k4 (8 sts).
• Row 18: K3, purl to last 3 sts, k3.