Shown with a cast-on count of 16 stitches.  

• Row 1 (RS): Sl1 wyib, k4, yo, k1, [(k1, yo, k1) in next st] 4 times, k1, yo, k5 (26 sts).
• Row 3: Sl1 wyib, knit.
• Rows 4, 6, 8, 10, 12, 14, 16, and 18: Sl1 wyib, k4, purl to last 5 sts, k5.
• Row 5: Sl1 wyib, k3, [k1, yo, k1, yo, k1] 6 times, k4 (38 sts).
• Row 7: Sl1 wyib, k3, [ssk, yo, k1, yo, k2tog] 6 times, k4.
• Row 9: Sl1 wyib, k3, [k1, yo, k3, yo, k1] 6 times, k4 (50 sts).
• Row 11: Sl1 wyib, k3, [ssk, yo, k3, yo, k2tog] 6 times, k4.
• Row 13: Sl1 wyib, k3, [k1, yo, k5, yo, k1] 6 times, k4 (62 sts).
• Row 15: Sl1 wyib, k3, [ssk, yo, k5, yo, k2tog] 6 times, k4.
• Row 17: Sl1 wyib, k3, [k1, yo, k7, yo, k1] 6 times, k4 (74 sts).