Shown with a cast-on count of 2 stitches.  

• Row 1 (RS): K2.
• Row 2: Kfb, k1 (3 sts).
• Row 3: Kfb, knit (4 sts).
• Row 4: K2, yo, knit (5 sts).
• Row 5: K2, yo, knit to last 2 sts, yo, k2 (7 sts).
• Rows 6 and 8: Knit.
• Row 7: K2, yo, knit to last 2 sts, yo, k2 (9 sts).
• Row 9: K2, yo, knit to last 2 sts, yo, k2 (11 sts).