Shown with a cast-on count of 19 stitches.  

• Row 1 (RS): *K1, yo, k2, yo, k2tog, ssk, yo, k2, yo, repeat from * to last st, k1 (multiple of 11 sts, plus 1).
• Rows 2, 4, 6, and 8: Purl.
• Row 3: *K1, yo, k2tog, k1, yo, ssk, k2tog, yo, k1, ssk, yo, repeat from * to last st, k1.
• Row 5: *K1, k2tog, k1, yo, ssk, k2tog, yo, k1, ssk, repeat from * to last st, k1 (multiple of 9 sts, plus 1).
• Row 7: *K2, yo, k2tog, k2, ssk, yo, k1, repeat from * to last st, k1.