Techniques used 
K: Knit
P: Purl
Yo: Yarn over
K2tog: Knit 2 together
P2tog: Purl 2 together
Ssk: Slip slip knit
Ssp: Slip slip purl
Pattern
Multiple of 9 sts, + 3.
Row 1 (RS): knit.
Row 2: purl.
Row 3: k3, *k2tog, k1, yo, k6*
Row 4: p7, *yo, p1, p2tog, p6*, yo, p1, p2tog, p2.
Row 5: k1, *k2tog, k1, yo, k6*, k2.
Row 6: p9, *yo, p1, p2tog, p6*, yo, p1, p2tog.
Row 7: knit.
Row 8: purl.
Row 9: *k6, yo, k1, ssk*, k3
Row 10: p2, *ssp, p1, yo, p6*, p1.
Row 11: k2, *k6, yo, k1, ssk*, k1.
Row 12: *ssp, p1, yo, p6*, p3.
Repeat rows 1-12.