#m12b.g M12 := MathieuGroup( 12 ); M12.generators; h1:=(1,12)(2,11)(3,10)(4,9)(5,8)(6,7); h2:=(2,3,5,9,8,10,6,11,4,7,12); IsSimple(H); Size(H); F2 := FreeGroup( "a", "b"); words := [ F2.1, F2.2 ]; P := PresentationViaCosetTable( H, F2, words ); G := FpGroupPresentation( P ); G.relators; SimplifyPresentation( P );