/*
www-ATLAS of Group Representations.
L2(7):2 represented as permutations on 21 points.
*/

G<x,y>:=PermutationGroup<21|\[
1,4,5,2,3,10,11,12,13,6,7,8,9,16,17,14,15,19,18,20,21]
,\[
2,3,1,6,8,7,4,9,5,14,15,11,10,13,12,18,20,19,16,21,17]
>;
print "Group G is L2(7):2 < Sym(21)";