Techniques used 
K: Knit
P: Purl
Yo: Yarn over
K2tog: Knit 2 together
Ssk: Slip slip knit
Pattern
Multiple of 9 sts, + 2.
Row 1 (RS): k2, *yo, k2, ssk, k2tog, k2, yo, k1*
Row 2: purl.
Row 3: K1, *yo, k2, ssk, k2tog, k2, yo, k1*, k1.
Row 4: purl.
Repeat rows 1-4.