Shown with a cast-on count of 13 stitches.  

• Rows 1 and 9 (RS): *K2, [yo, k2tog tbl] twice, repeat from * to last st, k1.
• Rows 2, 4, 6, 8, 10, 12, 14, and 16: Purl.
• Rows 3 and 11: *K1, [k2tog tbl, yo] twice, k1, repeat from * to last st, k1.
• Rows 5 and 15: *K2, [k2tog tbl, yo] twice, repeat from * to last st, k1.
• Rows 7 and 13: *K1, [yo, k2tog tbl] twice, k1, repeat from * to last st, k1.