X 2 2 m 1 x 2m 5 0 July 8, 2019 16 32 64 128 Cho pt x 2 2 m 1 x 2m 5 0 X 2 4 m 1 x 3m 2 2m 5 0 2m 1 x 2 2 m 3 x m 5 0
