Left diagonal slip stitch knitting - free pattern.

Knitted in a multiple of 6 sts, +4 and a 6-row repeat.
Row 1 - RS: K1, * sl 2 wyif, k4; rep from * to last 3 sts, sl 2 wyif, k1.
Row 2: P1, sl 1 wyib, p4, * sl 2 wyib, p4; rep from * to last 4 sts, sl 2 wyib, p2.
Row 3: K3, * sl 2 wyif, k4; rep from * to last 1 st, k1.
Row 4: P4, * sl 2 wyib, p4; rep from * to end.
Row 5: K5, * sl 2 wyif, k4; rep from * to last 5 sts, sl 2 wyif, k3.
Row 6: P2, * sl 2 wyib, p4; rep from * to last 2 sts, sl 1 wyib, p1.

Knitting abbreviations:
K: Knit | P: Purl | Sl: Slip stitch purlwise.
Wyif: With yarn in front  |  Wyib: With yarn in back.