4 7 x 21 2 July 8, 2019 16 32 64 128 4 7 x 21 20 4 7 х 21 2 3 х 9 X 7 4 4 x 7 2 21 0 2 3 4 7 x 11 21 Classeur 21 x 29 7 4 anneaux 4 7 x 4 7 x 21 2 divided by 10 3 4 7 8 x 21 2 4 7 x 4 7 x 21 2 10 4 x y 21 2 7 14 21 7 4 x 2 4 3 x 22 7 x 21 4 x 22 7 x 21 x 21 1 4 x 22 7 x 21