Knitted in a multiple of 16 sts, + 2 and 36-row repeat.
Rows 1 - 3 - 5 - 7 - 19 - 21 - 23 - 25- 27 -29 - 31 - 33 - 35 - Right side: P2, k2, * p2tog, yo, k2; rep from * to last 2 sts, p2.
Row 2 and all wrong side rows: K2, p2, * k2, p2; rep from * to last 2 sts, k2.
Row 9: P2, * CO; rep from * to last 2 sts, p2.
Rows 11 - 13 - 15: P2, k2, * p2, k2; rep from * to last 2 sts, p2.
Row 17: P2, *CO; rep from * to last 2 sts, p2.
Row 36: K2, p2, * k2, p2; rep from * to last 2 sts, k2.

Abbreviations
Knit: K | Purl: P | Yarn over: Yo | Purl 2 sts together: P2tog
Crossover: CO (Slip 6 sts to dpn and hold in front, (k2, p2) twice, then k2, p2, k2 from dpn)