Cut pieces in the following order.
Sew together two assorted solid 2 X 22" strips to make a strip set (Diagram 1). Press seam open. Repeat to make 20 strip sets total.
Cut each strip set into six 2"-wide segments to make 120 total 2"-wide segments.
Sew together two 2"-wide segments to make a Four-Patch unit (Diagram 2). Press seam open. The Four-Patch unit should be 3-1/2" square including seam allowances. Repeat to make 60 Four-Patch units total.
Lay out 60 Four-Patch units in 12 rows (Diagram 3).
Sew together units in each row. Press seams open. Join rows to make pieced rectangle. The pieced rectangle should be 15-1/2 X 36-1/2" including seam allowances.