4 4 7 x 3 1 2 July 8, 2019 16 32 64 128 6 4 7 x 3 1 2 4 7 8 x 3 1 2 4 15 3 2x 4 ))- 13 7 x 1 )- 39 4 2 3x )- 7 3 x 1 )+ 4 4 3/4 x 7 1/2 envelope 3x 7 )/ 4 5x 4 )/ 7 x 3 1 2 4 7 3 7x 1 2 4 7×3 2
