p0:= PermList([2, 1]);
p1:= PermList([1, 2]);
p2:= PermList([2, 1]);
p3:= PermList([1, 2]);
p4:= PermList([2, 1]);
p5:= PermList([1, 2]);
H:=Group(p0,p1,p2,p3,p4,p5);