1. Referring to Diagram 6 for unit placement and orientation, lay out two of Unit A and one each of units B and C in pairs.
2. Sew together units in each pair. Press seams open. Join pairs to make a block. Press seam open. The block should be 12-1⁄2" square including seam allowances.
3. Repeat steps 1 and 2 to make four blocks total.