"Source: Text/Group/GrpFP.text";
"Line: 2583";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Group/GrpFP.text, line: 2583
// Example: H80E24 ()
print "Example: H80E24";
ei := GetEchoInput();
SetEchoInput(true);
F<x, y> := FreeGroup(2);
G<a, b> := quo<F | x^8, y^7, (x*y)^2, (x^-1*y)^3>;
H := sub<G | a^2,a^-1*b>;
Index(G, H);
assert $1 eq 448;
SetEchoInput(ei);
