Tatted Edging #4

Uses shuttle and ball.

Make a ring of 4ds, 5p separated by 2ds, 4ds, close.
Turn work.
Using thread from ball make a chain of 2ds, 3p separated by 2ds, end ing with 2ds.
Turn work.
Make ring of 4ds, join to last picot of first ring, 2ds, 4p sep by 2ds, 4ds, close.
Turn work.
Make a chain as above.
Continue in this fashion for desired length.