Shown with a cast-on count of 38 stitches.  

• Rows 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, and 31 (WS): K1, *p18, repeat from * to last st, k1.
• Rows 2, 6, 10, 14, 18, 22, 26, and 30: P1, *k18, repeat from * to last st, p1.
• Rows 4, 8, 12, and 16: P1, *sl2-k1-p2sso, [k2tog] twice, [k1, yo] 6 times, k1, [ssk] twice, repeat from * to last st, p1.
• Rows 20, 24, 28, and 32: P1, *[yo, k1] 3 times, [ssk] twice, sl2-k1-p2sso, [k2tog] twice, [k1, yo] 3 times, k1, repeat from * to last st, p1.