Zig Zag Fixed Loop Stitch in Garter Stitch

Yarn shown in this swatch: Milk cotton China.
Needles: US 5 - 3.75mm.
Skill: Intermediate.

Techniques used:
Knit: K.
Purl: P.
Slip stitch: Sl.
With yarn in front: Wyif.
With yarn in back: Wyib.

Instructions:
Cast on a multiple of 4 sts + 2.
Row 1 (Right side): K1, * K3, k1 wrapping yarn twice around needle; repeat from * to last st, k1.
Row 2: K1, * sl 1 wyif dropping extra wrap, k3; repeat from * to last st, k1.
Row 3: K1, * k3, sl 1 wyib; repeat from * to last st, k1.
Row 4: K1; * sl 1 wyif, k3; repeeat from * to last 1 st, k1.
Row 5: K1; * sl 3 wyib, drop next slip st off left-hand needle to front of work, slip the same 3 sts back to the left-hand needle, then pick up dropped st and knit wrapping the yarn twice around the needle, k3; repeat from * to last st, k1.
Row 6: K1, * k3, sl 1 wyif dropping extra wrap; repeat from * to last st, k1.
Row 7: K1, * sl 1 wyib, k3; repeat from * to last st, k1.
Row 8: K1, * k3, sl 1 wyif; repeeat from * to last 2 st, k1.
Row 9: K1, * drop next slip st off left-hand needle to front of work, k3, then pick up dropped st and knit wrapping the yarn twice around the needle; repeat from * to last st, k1.
Repeat rows 2 to 9 till necessary for completing your project.

(Written instructions in Italian:  http://www.oggi.it/blog-hobby-e-casa/2010/02/03/il-punto-catenella-zig-zag)