Video tutorial :

Tunisian Simple Stitch (Tss): Insert hk, from right to left, into front vert bar of next st and pull up a lp.

Ch multiply of 2.

Row 1: Pull up lp in 2nd ch from hk and each across.

Row 2: Yo, pull through 1 lp on hk, *yo, pull through 2 lps on hk; rep from * to end.

Row 3: Ch 1, Yo, pull through 1 lp on hk, *yo, pull between 2 lps on hk; rep from * to end.

Row 4: Yo, pull through 1 lp on hk, *yo, pull through 2 lps on hk; rep from * to end.

Rep rows 3-4 to desired length.