Shown with a cast-on count of 25 stitches.  

• Rows 1, 3, 5, 7, and 9 (WS): P1, knit to last st, p1.
• Row 2: *K1, yo, k4, k3tog, k4, yo, repeat from * to last st, k1.
• Row 4: *K2, yo, k3, k3tog, k3, yo, k1, repeat from * to last st, k1.
• Row 6: *K3, yo, k2, k3tog, k2, yo, k2, repeat from * to last st, k1.
• Row 8: *K4, yo, k1, k3tog, k1, yo, k3, repeat from * to last st, k1.
• Row 10: *K5, yo, k3tog, yo, k4, repeat from * to last st, k1.