"Source: Text/Group/GrpPerm.text";
"Line: 3374";
"Date: Wed Mar 24 09:34:33 2021";
"Main: Thu May 25 10:02:38 2023";
// original file: Text/Group/GrpPerm.text, line: 3374
// Example: H64E21 ()
print "Example: H64E21";
ei := GetEchoInput();
SetEchoInput(true);
G := PSL(2,9);
time L := SubgroupLattice(G);
L; 
NumberOfInclusions(L!5, L!20);
assert $1 eq 6;
L[5];
SetEchoInput(ei);
