Shown with a cast-on count of 25 stitches.  

• Rows 1, 3, 5, 7, and 9 (RS): Knit.
• Row 2: *P9, k1, p2tog, yo, repeat from * to last st, k1.
• Row 4: *P7, k1, [p2tog, yo] twice, repeat from * to last st, k1.
• Row 6: *P5, k1, [p2tog, yo] 3 times, repeat from * to last st, k1.
• Row 8: *P3, k1, [p2tog, yo] 4 times, repeat from * to last st, k1.
• Row 10: *P1, k1, [p2tog, yo] 5 times, repeat from * to last st, k1.