Granny squares - crochet together
Work 1 sc in the ch-space in the corner on one square, ch 2, 1 sc in the ch-space in the corner on the other square, * ch 4, 1 sc in next ch-space on the first square, ch 2, 1 sc in next ch-space on the other square *, repeat from *-*.
Work squares tog first at length and then across.
Note - the number of chain sts between squares may differ from pattern to pattern, depending on thickness of yarn etc. This shows the technique though.