"Source: Text/Group/GrpAtc.text";
"Line: 1426";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Group/GrpAtc.text, line: 1426
// Example: H84E15 ()
print "Example: H84E15";
ei := GetEchoInput();
SetEchoInput(true);
//no-test
F<a, b, c>:= FreeGroup(3);        
green:= [(a*b*c)^2, a*b*c*a*b*b];
G:= Simplify(quo<F|green>);
G;
IsHyperbolic(FreeGroup(G), [], Relators(G));
SetEchoInput(ei);
