Using worsted weight yarn and size 11 to 13 needles, cast on 26 stitches.
Note: C4F will be used to denote "cable four twisting to the left" -- slip 2 stitches onto cable needle, held to front. K2, K2 from cable needle.
Row 1: Knit across to last stitch, pass yarn to front, and slip the last stitch.
Repeat rows 4 and 5 until scarf is desired length.
Repeat row 3, then repeat row 2. Cast off.