Shown with a cast-on count of 0 stitches.  

• Row 0 (RS): CO 5 sts (5 sts).
• Row 1: Yo, k1, yo, k1, yo, k1, yo, k1, yo, k1, yo (11 sts).
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20 (WS): Purl.
• Row 3: Yo, k1, yo, k3, yo, k3, yo, k3, yo, k1, yo (17 sts).
• Row 5: Yo, k1, yo, k5, yo, k5, yo, k5, yo, k1, yo (23 sts).
• Row 7: Yo, k1, yo, k7, yo, k7, yo, k7, yo, k1, yo (29 sts).
• Row 9: Yo, k1, yo, k9, yo, k9, yo, k9, yo, k1, yo (35 sts).
• Row 11: Yo, k1, yo, k11, yo, k11, yo, k11, yo, k1, yo (41 sts).
• Row 13: Yo, k1, yo, k13, yo, k13, yo, k13, yo, k1, yo (47 sts).
• Row 15: Yo, k1, yo, k15, yo, k15, yo, k15, yo, k1, yo (53 sts).
• Row 17: Yo, k1, yo, k17, yo, k17, yo, k17, yo, k1, yo (59 sts).
• Row 19: Yo, k1, yo, k19, yo, k19, yo, k19, yo, k1, yo (65 sts).