Shown with a cast-on count of 0 stitches.  

• Row 0 (RS): CO 4 sts (4 sts).
• Row 1: K4.
• Row 2: K2, yo, knit (5 sts).
• Row 3: K2, yo, knit (6 sts).
• Row 4: K2, yo, knit (7 sts).
• Row 5: K2, yo, knit (8 sts).
• Row 6: K2, yo, knit (9 sts).
• Row 7: K2, yo, knit (10 sts).
• Row 8: K2, yo, knit (11 sts).
• Row 9: K2, yo, knit (12 sts).
• Row 10: K2, yo, knit (13 sts).
• Row 11: K2, yo, knit (14 sts).
• Row 12: K2, yo, knit (15 sts).
• Row 13: K2, yo, knit (16 sts).
• Row 14: K2, yo, knit (17 sts).
• Row 15: K2, yo, knit (18 sts).
• Row 16: K2, yo, knit (19 sts).
• Row 17: K2, yo, knit (20 sts).
• Row 18: K2, yo, knit (21 sts).
• Row 19: K2, yo, knit (22 sts).
• Row 20: K2, yo, knit (23 sts).