This pattern can be adapted to circular knitting by knitting all the odd numbered rows.
Repeat rows 1 - 8.

Row #SideBegin RowRepeatRepeat From *End Row
1W*purl* 
2R*knit* 
3W*purl* 
4Rk1*(k5, turn, p5, turn) 3 times, k10*k1
5W*purl* 
6R*knit* 
7W*purl* 
8Rk6*(k5, turn, p5, turn) 3 times, k10 *k6