Hmm, I'm confused then .... for C4, my instructions say to slip 2 st, k2, k2 from needle, crossing 2x2. Following the same logic ... if you slip 3 sts, k3, k3 from needle, shouldn't the instructions be C6F?
Here is the row:
K4, C3B, C3F, K6, C3B, C3F END K4
Per your instructions it would be ... K4, sl 3 with needle in back, k3, k3 from needle, sl 3 with needle in front, k3, k3 from needle ... correct?