With the Plain Trellis Stitch:
A multiple of 4 stitches + 3.
(Add 3 for base chain).1st Row. 1 sc into 6th ch from hook, *5 ch, skip 3 ch, 1 sc into next ch; rep from * to ed, turn.
2nd Row. *5 ch, 1 sc into next 5-ch arch, repeat from * to end, turn.
Rep 2nd Row.Tip:
For a firmer fabric, work the single crochet in the center chain of 5, instead of in the chain space.
Crochet a sleeveless blouse, or a dress.

Detail showing trellis with block and diamond patterns.
This crochetology problem is an exploration of one of the simplest in the category of openwork and lace patterns: the Plain Trellis Stitch.
The Trellis Stitch is also known as “fishnet chains” and “arch mesh.” It is also commonly found as net or mesh background in Irish crochet.