The double chain stitch is a variation on the chain stitch, in which two stitches are worked side by side while interlocking with each other. The double chain is created by bringing the needle out at A and then inserting it at B. The needle is then brought out at C to create an open chain stitch. A similar stitch is worked to the left. The third stitch is worked by inserting the needle into the first chain just to the right of C and so on.