Horizontal Lines Crochet Pattern
Double treble (dtr) = yo 3 times instead of 2 times and complete as you do for a regular treble crochet stitch. In other words, yo 3 times, insert hook into your work, yo, draw loop through, [yo, draw through 2 loops] 4 times ending with just one loop on hook.
1st row (WS): Sc in 2nd ch from hook, sc into next and each ch to end, turn;
2nd row: Ch 3, dtr into first st and each st to end, turn;
3rd, 4th and 5th rows: Ch 1, sc in first st and each st to end, turn.
Repeat 2nd-5th rows.