Crochet Open Work Rib Pattern
The quantity of sts is multiple 2.
1st row: 3ch, dc into 4th ch from hook, dc in each ch to the end of the row, turn;
2nd row: 5ch, skip 1 dc, tr into next dc, *1ch, skip 1 dc, 1 tr into next dc; rep from * to end;
3rd row: 3ch, *2dc into next 1ch sp; rep from * to end, last dc into 4th ch in tch.
Repeat 1st-3rd rows.