Foundation - Ch an even number of sts.
Row 1 - Sc in 2nd ch from hk, *ch1, sk 1 ch, sc in next st; rpt from * across ending with sc in last st. Turn.
Row 2 - Ch1, sc in ch-1 sp, * ch1, sk 1 sc, sc in next ch1-1 sp, rpt from * across ending with sc in turning ch of previous row.
Repeat row 2 until you reach your desired length.