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

  • Wrap 4: Purl 4, slip 4 sts just made from right-hand needle to cable needle, wrap yarn around all 4 sts clockwise 3 times. Slip same 4 sts back to right-hand needle. 

Pattern
Multiple of 21, + 3.
Row 1 (WS): knit.
Row 2 (RS): purl.
Row 3: knit.
Row 4: k1, *yo, k21*, k2.
Row 5: p1, *p2, (k4, p1) x4*, p2.
Row 6: k1, *k1, yo, k1, (p3, k1) x5, yo*, k2.
Row 7: p1, * p3, (k3, p1) x5, p1; rep from * to last st, p2.
Row 8: k1, *(k1, yo) x2, (ssk, p2) x5, (k1, yo) x2*, k2.
Row 9: p1, *p5, (k2, p1) x5, p3*, p2.
Row 10: k1, *(k1, yo) x4, (ssk, p1) x5, (k1, yo) x4*, k2.
Row 11: p1, *p9, (k1, p1) x5, p7*, p2.
Row 12: k1, *k8, (ssk) x5, k8*, k2.
Row 13: p1, *p9, wrap, p8*, p2.
Row 14: knit.
Repeat rows 1-14.