Cast on a number of stitches multiple of 4 + 1.
Rows 1 and 5: *K2, slip 1 stitch purlwise, K1*, K1.
Rows 2 and 6: P1, *P1, slip 1 stitch purlwise, P2*.
Row 3: *slip 2 stitches to cable needle (at the back of the work); K1 (the slipped stitch), knit the 2 stitches on the cable needle, K1*, K1.
Rows 4 and 8: purl all stitches.
Row 7: K1, *K1, slip the next stitch to a cable needle (at the front of the work); K2, knit the stitch on the cable needle*.
ABBREVIATIONS
K: knit
P: purl
Yarn: Rosários4 Re-Use (recycled cotton)