Doesn't matter about the stitch used, just the color sequence.
Okay, work rows 7, 8, 9 with D
After row 6 with C you'll need to cut that one because you need it at the beginning of row 10 which is on the other side from the end of row 6. If you start the color sequence over, then you can keep C going for row 12-17, and probably have to cut B. You'll get it figured out as you go along - if the yarn is dropped at the end of a row and will be needed at the beg of a row on the other edge then you have to cut it. If it's needed for a row on the same edge and only 2 or 4 up, then you don't need to cut.
Work 6 rows with 1 strand of A and 1 strand of C.
Work 1 row with 1 strand of A and 1 strand of D.
Work 2 rows with 1 strand of B and 1 strand of D.
Work 2 rows with 1 strand of B and 1 strand of C.
sue- knitting heretic