This is Trellis Lace in mirror image - because right leaning diagonals usually look neater than left leaning ones.
I'd like to try changing the ssk in rows 1 and 7 to k2tog.
Shown with a cast-on count of 21 stitches.
1 2 3 4 5 Horizontal repeats
1 2 3 4 5 Vertical repeats
Swatch photo uploaded by chrisfourfalcon