Shown with a cast-on count of 6 stitches.  

• Row 1 (RS): K2, yo, k2tog, yo wrapping yarn twice, k2 (7 sts).
• Rows 2, 4, 6, 8, 10, 12, 14, 16, and 18: Sl1 wyib, knit.
• Row 3: K3, yo, k2tog, yo wrapping yarn twice, k2 (8 sts).
• Row 5: K2, [yo, k2tog] twice, yo wrapping yarn twice, k2 (9 sts).
• Row 7: K3, [yo, k2tog] twice, yo wrapping yarn twice, k2 (10 sts).
• Row 9: K2, [yo, k2tog] 3 times, yo wrapping yarn twice, k2 (11 sts).
• Row 11: K3, [yo, k2tog] 3 times, yo wrapping yarn twice, k2 (12 sts).
• Row 13: K2, [yo, k2tog] 4 times, yo wrapping yarn twice, k2 (13 sts).
• Row 15: K3, [yo, k2tog] 4 times, yo wrapping yarn twice, k2 (14 sts).
• Row 17: K2, [yo, k2tog] 5 times, yo wrapping yarn twice, k2 (15 sts).
• Row 19: K3, [yo, k2tog] 5 times, yo, k2 (16 sts).
• Row 20: BO 10 sts, k5 (6 sts).