Repeat rows 1 - 4.
Row #SideBegin RowRepeatRepeat From *End Row
1Rk2*p3 tog, then knit the same 3 stitches together, then purl the same 3 stitches together again, then slip all three stitches from needle, k1 *k1
2W*purl* 
3Rk4*p3 tog, then knit the same 3 stitches together, then purl the same 3 stitches together again, then slip all three stitches from needle, k1 *k3
4W*purl*