Shown with a cast-on count of 29 stitches.  

• Row 1 (RS): K1, ssk, k2, yo wrapping yarn twice, k19, yo wrapping yarn twice, k2, k2tog, k1.
• Row 3 (RS): K1, ssk, yo, k11, yo, k1, yo, k11, yo, k2tog, k1 (31 sts).
• Row 5 (RS): K2, yo, k12, yo, k1, yo, k1, yo, k1, yo, k12, yo, k2 (37 sts).
• Row 7 (RS): K2tog, yo, k11, ssk, yo, kfb, kfb, kfb, kfb, kfb, kfb, kfb, yo, k2tog, k11, yo, ssk (44 sts).