/*
2"M22 as 10 x 10 matrices over Z4.
*/

Z:=Integers(4);

G<x,y>:=MatrixGroup<10,Z|\[
3,0,0,0,0,0,0,0,0,0,
0,0,0,0,3,0,0,0,0,0,
3,1,1,0,1,0,0,0,0,0,
0,0,0,0,0,0,0,3,0,0,
0,3,0,0,0,0,0,0,0,0,
1,0,0,1,0,1,0,1,0,0,
0,0,0,0,0,0,0,0,0,3,
0,0,0,3,0,0,0,0,0,0,
2,0,0,0,0,0,1,0,1,1,
0,0,0,0,0,0,3,0,0,0]
,\[
0,3,0,0,3,1,0,0,0,0,
0,0,3,0,0,0,0,0,0,0,
3,0,1,3,1,3,0,3,3,0,
3,0,0,0,0,0,0,0,0,0,
0,2,2,0,2,1,0,0,0,0,
3,0,1,0,1,3,1,1,1,0,
0,0,0,0,1,0,0,0,0,0,
0,0,0,0,0,0,0,0,1,0,
2,1,2,3,2,0,2,2,1,0,
1,2,1,0,3,3,2,0,0,3]
>;

A:=x;B:=y;