With color A purl 1 row.
Repeat Rows 1 - 8

Row #SideColorBegin RowRepeatRepeat From *
1RBk1*sl 1 wyib, k1*
2WBp1*sl 1 wyif, p1*
3RBk1*sl 1 wyib, k1*
4WB*purl*
5RAk1*sl 1 wyib, k1*
6WAp1*sl 1 wyif, p1*
7RAk1*sl 1 wyib, k1*
8WA*purl*

 



Row: 8  
  Row: 7
Row: 6  
  Row: 5
Row: 4  
  Row: 3
Row: 2  
  Row: 1