Techniques used 
K: Knit
P: Purl
Yo: Yarn over
K2tog: Knit 2 together
Ssk: Slip slip knit

  • Sskpo: Slip slip knit, then place the stitch back on the left-hand needle. Lift the second stitch on the left-hand needle over the ssk loop, then return the ssk loop to the right-hand needle.

Pattern
Multiple of 8, + 1
Row 1 (RS): k2, *k2tog, yo, k1, yo, ssk, k3*, k2tog, yo, k1, yo, ssk, k2.
Rows 2, 4, 6, 8, 10, 12: purl.
Row 3: k1, * k2tog, yo, k3, yo, ssk, k1*.
Row 5: k2tog, yo, *k5, yo, sskpo, yo*, k5, yo, ssk.
Row 7: k1, *yo, ssk, k3, k2tog, yo, k1*.
Row 9: k2, *yo, ssk, k1, k2tog, yo, k3;*, yo, ssk, k1, k2tog, yo, k2.
Row 11: k3, *yo, sskpo, yo, k5*, yo, sskpo, yo, k3.
Repeat Rows 1 - 12.