Slip Stitch Knitting 09: Ladder

PATTERN
Cast on a multiple of 10 sts, +7.
Rows 1 and 3 (RS): Color A, K7, *sl3 wyib, k7, repeat from *.
Rows 2 and 4: Color A, K7, *sl3 wyif, k7, repeat from *.
Rows 5 and 7: Color B, K2, sl3 wyib, *k7, sl3 wyib, repeat from * to last 2 sts, k2.
Rows 6 and 8: Color B, K2, sl3 wyif, *k7, sl3 wyif, repeat from * to last 2 sts, k2.
Repeat rows 1-8.