Based on Snowflake Eyelet in Barbara Walker’s A Second Treasury of Knitting Patterns*. See also Erika Knight’s Lace & Eyelets*.
*Affiliate link. Buy the book and I get a couple pennies.
Shown with a cast-on count of 31 stitches.
1 2 3 4 5 Horizontal repeats
1 2 3 4 5 Vertical repeats