Colors A and B.
Repeat rows 1 - 4.

Row #SideColorBegin RowRepeatRepeat From *End Row
1WA*purl wrapping yarn twice for each stitch * 
2RA*slip 4 stitches briefly in order to drop extra wraps, then return the 4 stitches to the left needle; (k4-tog, p4-tog) twice in the same 4 stitches * 
3WBp2*purl wrapping yarn twice for each stitch *p2
4RBk2*slip 4 stitches briefly in order to drop extra wraps, then return the 4 stitches to the left needle; (k4-tog, p4-tog) twice in the same 4 stitches *k2