Shown with a cast-on count of 18 stitches.  

• Rows 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, and 25 (WS): Knit.
• Row 2: K2, yo, k3, yo, ssk, k10, turn (18 sts).
• Row 4: K2, yo, k5, yo, ssk, k8, turn.
• Row 6: K2, yo, k3, yo, ssk, k2, yo, ssk, k6, turn.
• Row 8: K1, k2tog, yo, ssk, k3, k2tog, yo, k7, turn (16 sts).
• Row 10: K1, k2tog, yo, ssk, k1, k2tog, yo, k7, turn (14 sts).
• Row 12: K1, k2tog, yo, sl1-k2tog-psso, yo, k7, turn (12 sts).
• Row 14: K2, yo, k3, yo, ssk, k4, turn.
• Row 16: K2, yo, k5, yo, ssk, k2, turn.
• Row 18: K2, yo, k3, yo, ssk, k2, yo, ssk, k1, turn (13 sts).
• Row 20: K1, k2tog, yo, ssk, k3, k2tog, yo, k1, turn (10 sts).
• Row 22: K1, k2tog, yo, ssk, k1, k2tog, yo, k1, turn (8 sts).
• Row 24: K1, k2tog, yo, sl1-k2tog-psso, yo, k1, turn (6 sts).
• Row 26: Knit (0 more sts).