M 2 5 m 4 7 July 8, 2019 16 32 64 128 M 2 5m 4 )( m 2 7m 3 M 5 m 2 4 m 3 7 2m 4 5m 2 )( m 3 7m 7m 2 m 5m m 4 2 m 5
