A 'Twist' on the basic granny......

Wednesday's square is a basic granny square with a twist! After each set of three treble crochets a fourth stitch (a double treble crochet) is worked which creates the 'twisted' effect in this square:

The twist stitch is worked as follows - start the dtrc as usual with yo hook twice, then insert the hook back to front into the same space as the 3 tc but just before the first of the three tc. The dtc crosses in FRONT of the 3 tc. Finish the dtc as normal. 
I finished the square with a round of dc to tidy up the edge.