Crochet a Classic Granny Square in Two Colors

There are any number of variations in instructions for a Classic Granny Square.  In this particular sample, I will be making mine with 3dc - 3ch - 3dc shells, or clusters.  As you can see, this is also worked in two colors.

With Color A
Chain 4 and join with a slip stitch to form a ring

Round 1: Chain 3 (counts as dc), work 2 more dc into ring *ch 3, work 3 dc into ring.  Repeat from * twice, then join with a slip stitch into 3rd chain of the beginning chain 3.

With Color B

Round 2: Join Color B by making a slip knot on hook, then place the hook into any chain 3 space from first round.  Draw up a loop, yarn over and pull through both loops.  Chain 2 more (counts as a dc), then work 2 dc in same space to make half corner.  *Chain 2, [3 dc, 3 ch, 3 dc] into next chain 3 space. Repeat from * twice, then ch 2, 3 dc in same space as beginning half corner, ch 3 and join with slip stitch into 3rd chain of beginning chain 3.

With Color A

Round 3: Join color as above in Round 2, then make 2 more dc in same chain 3 space to make half corner.  *Chain 2, 3 dc in next ch 2 space, ch 2 [3 dc, 3 ch, 3 dc] in next chain 3 space.  Repeat from *twice, then ch 2, 3 dc into next chain 2 space, ch 2, 3 dc in same space as beginning half corner, ch 3 and join with a slip stitch into 3rd chain of beginning chain 3.