Shown with a cast-on count of 7 stitches.  

• Row 1 (RS): K2, kfb, k1, kfb, k2 (9 sts).
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, and 70 (WS): Sl1 wyib, k1, purl to last 2 sts, k2.
• Row 3: K2, yo, k2, yo, k1, yo, k2, yo, k2 (13 sts).
• Row 5: K2, yo, k4, yo, k1, yo, k4, yo, k2 (17 sts).
• Row 7: K2, yo, k2, yo, sl2-k1-p2sso, yo, k1, yo, k1, yo, k1, yo, sl2-k1-p2sso, yo, k2, yo, k2 (21 sts).
• Row 9: K2, yo, k1, yo, k1, k2tog, yo, k1, yo, ssk, k1, yo, k1, yo, k1, k2tog, yo, k1, yo, ssk, k1, yo, k1, yo, k2 (27 sts).
• Row 11: K2, yo, k1, yo, k1, k2tog, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, ssk, yo, k1, yo, k2tog, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, ssk, k1, yo, k1, yo, k2 (33 sts).
• Row 13: K2, yo, k1, yo, k1, k2tog, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, sl2-k1-p2sso, yo, k2, yo, k1, yo, k2, yo, sl2-k1-p2sso, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, ssk, k1, yo, k1, yo, k2 (39 sts).
• Row 15: K2, yo, k1, yo, k1, k2tog, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, k1, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, ssk, k1, yo, k1, yo, k2 (45 sts).
• Row 17: K2, yo, k1, yo, k1, k2tog, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, ssk, k1, yo, k1, yo, k1, k2tog, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, ssk, k1, yo, k1, yo, k2 (51 sts).
• Row 19: K2, yo, k1, yo, k1, yo, sl2-k1-p2sso, yo, p6, yo, ssk, yo, sl2-k1-p2sso, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, ssk, yo, k1, yo, k2tog, yo, k1, yo, sl2-k1-p2sso, yo, k1, yo, sl2-k1-p2sso, yo, k2tog, yo, p6, yo, sl2-k1-p2sso, k1, yo, k1, yo, k2 (56 sts).