Shown with a cast-on count of 5 stitches.  

• Row 1 (RS): K1, yo, k3, yo, k1 (7 sts).
• Rows 2, 8, and 14: Purl.
• Row 3: K1, yo, k5, yo, k1 (9 sts).
• Row 4: P1, yo, p7, yo, p1 (11 sts).
• Rows 5, 11, and 17: Knit.
• Row 6: P1, yo, p9, yo, p1 (13 sts).
• Row 7: K1, yo, k11, yo, k1 (15 sts).
• Row 9: K1, yo, k13, yo, k1 (17 sts).
• Row 10: P1, yo, p15, yo, p1 (19 sts).
• Row 12: P1, yo, p17, yo, p1 (21 sts).
• Row 13: K1, yo, k19, yo, k1 (23 sts).
• Row 15: K1, yo, k21, yo, k1 (25 sts).
• Row 16: P1, yo, p23, yo, p1 (27 sts).