"First ground" in walking stitch crochet

This is a walking stitch pattern for a crocheted fabric similar to Thérèse de Dillmont's first ground for Irish crochet lace. The undip code is:

u (nu)^a [uu (up)^a nn (nd)^a]^x.

The scale is twice that of de Dillmont's because the interval between crochets here is four strides rather than four steps.


Image of "first ground" for irish crochet lace from "Irish Crochet Lace" by Therese de Dillmont.


de Dillmont's instructions for First Ground.