Shown with a cast-on count of 6 stitches.  

• Row 1 (RS): K1, yo, p2tog, k2tog, k1 (5 sts).
• Row 2: Yo, k2, yo, p2tog, k1 (6 sts).
• Row 3: K1, yo, p2tog, k1, yo, k2 (7 sts).
• Row 4: Yo, k4, yo, p2tog, k1 (8 sts).
• Row 5: K1, yo, p2tog, k3, yo, k2 (9 sts).
• Row 6: Yo, [k2tog] twice, k2, yo, p2tog, k1 (8 sts).
• Row 7: K1, yo, p2tog, k2, k2tog, k1 (7 sts).
• Row 8: Yo, [k2tog] twice, yo, p2tog, k1 (6 sts).