Shown with a cast-on count of 5 stitches.  

• Row 1 (RS): K1, kfb, k1, kfb, k1 (7 sts).
• Rows 2, 4, 6, 8, 10, 12, and 14: Knit.
• Row 3: Sl1 wyib, kfb, k1, yo, k1, yo, k1, kfb, k1 (11 sts).
• Row 5: Sl1 wyib, kfb, k1, yo, k2tog, k1, ssk, yo, k1, kfb, k1 (13 sts).
• Row 7: Sl1 wyib, kfb, k2, yo, k2tog, k1, ssk, yo, k2, kfb, k1 (15 sts).
• Row 9: Sl1 wyib, kfb, k3, yo, k2tog, k1, ssk, yo, k3, kfb, k1 (17 sts).
• Row 11: Sl1 wyib, kfb, k4, yo, k2tog, k1, ssk, yo, k4, kfb, k1 (19 sts).
• Row 13: Sl1 wyib, kfb, k5, yo, k2tog, k1, ssk, yo, k5, kfb, k1 (21 sts).