This pattern can be adapted to circular knitting by knitting all the odd numbered rows.
Repeat Rows 1 - 16.

Row #SideBegin RowRepeatRepeat From *End Row
1W*purl* 
2RK6, p2 tog, yo, k1, yo, p2 tog*K7, p2 tog, yo, k1, yo, p2 tog*k6
3W*purl* 
4RK6, yo, p2 tog, k1, p2 tog, yo*k7, yo, p2 tog, k1, p2 tog, yo*k6
5W*purl* 
6RK6, yo, p2 tog, k1, p2 tog, yo *k7, yo, p2 tog, k1, p2 tog, yo *k6
7W*purl* 
8RK6, p2 tog, yo, k1, yo, p2 tog *K7, p2 tog, yo, k1, yo, p2 tog*k6
9W*purl* 
10RK2*k1, yo, p2 tog, k7, p2 tog, yo*k3
11W*purl* 
12RK2*k1, p2 tog, yo, k7, yo, p2 tog*k3
13W*purl* 
14RK2*k1, p2 tog, yo, k7, yo, p2 tog *k3
15W*purl* 
16RK2*k1, yo, p2 tog, k7, p2 tog, yo*k3