Shown with a cast-on count of 22 stitches.  

• Rows 1, 5, and 9 (RS): *K1, [k1, yo] 3 times, [ssk] 3 times, p1, repeat from *.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20: *P10, k1, repeat from *.
• Rows 3 and 7: *K1, [yo, k1] 3 times, [ssk] 3 times, p1, repeat from *.
• Rows 11, 15, and 19: *[K2tog] 3 times, [yo, k1] 3 times, k1, p1, repeat from *.
• Rows 13 and 17: *[K2tog] 3 times, [k1, yo] 3 times, k1, p1, repeat from *.