/*
2"A8 as 4 x 4 matrices over Z4.
*/

Z:=Integers(4);

G<x,y>:=MatrixGroup<4,Z|\[
0,1,0,0,
3,3,0,0,
0,0,0,1,
0,0,3,3]
,\[
1,0,0,0,
0,0,1,0,
1,3,0,3,
3,0,1,1]
>;

A:=x;B:=y;