g := Alt(5);
invols := 
[ 
[g|
(1, 3)(4, 5)
,
(1, 2)(3, 4)
,
(1, 5)(3, 4)
],
[g|
(1, 2)(3, 4)
,
(1, 3)(4, 5)
,
(1, 4)(2, 3)
]
];