"Source: Text/Group/GrpFPInt.text";
"Line: 860";
"Date: Mon Jan 20 11:08:12 2020";
"Main: Thu May 25 10:02:38 2023";
// original file: Text/Group/GrpFPInt.text, line: 860
// Example: H77E11 ()
print "Example: H77E11";
ei := GetEchoInput();
SetEchoInput(true);
G<x,y> := FPGroup< x, y |  x^2, y^3, (x * y)^7, (x, y)^9 >;
yes, proof := IsInfinite(G);
yes;
proof;
IsPerfect(G);
H := sub< G |  x, y * x * y * x * y * x * y^-1 >;
Index(G, H);
IsPerfect(H);
AbelianQuotient(H);
a := SmallCancellationConditions(G);
SetEchoInput(ei);
