Casting on with two colors separately
Recently I wanted to knit something using two colors of yarn from the cast-on row, but I didn't want to "wrap" the yarns. That is, I wanted to cast on 1 "stitch" of color A and then one stitch of color B.
So I did. I cast on 1 st of A, then 1 st of B, then 1 of A, then 1 of B and kept repeating that A/B/A/B cast-oning. (Might one call the Abba Cast-on?)
Then I PURLED the first row using ONLY color A. Then, turning, I purled right back in A on row 2.
Then for row 3, I purled using only B -- and purled back in B for row 4.