Shown with a cast-on count of 3 stitches.  

• Row 1 (RS): K1, yo, k1, yo, k1 (5 sts).
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, and 24: Knit.
• Row 3: K2, yo, k1, yo, k2 (7 sts).
• Row 5: K2, yo, k1, yo, k1, yo, k2tog, k1 (9 sts).
• Row 7: K2, yo, k2, yo, k2, yo, k2tog, k1 (11 sts).
• Row 9: K2, yo, k3, yo, k3, yo, k2tog, k1 (13 sts).
• Row 11: K2, yo, k1, yo, k2tog, k1, yo, k1, yo, k2tog, k1, yo, k2tog, k1 (15 sts).
• Row 13: K2, [yo, k1] twice, [yo, k2tog] 5 times, k1 (17 sts).
• Row 15: K2, [yo, k1] twice, k2, [yo, k2tog] 5 times, k1 (19 sts).
• Row 17: K2, [yo, k1] twice, k4, [yo, k2tog] 5 times, k1 (21 sts).
• Row 19: K2, [yo, k1] twice, k6, [yo, k2tog] 5 times, k1 (23 sts).
• Row 21: K2, [yo, k1] twice, k8, [yo, k2tog] 5 times, k1 (25 sts).
• Row 23: K2, [yo, k1] twice, k10, [yo, k2tog] 5 times, k1 (27 sts).
• Row 26: Knit.