// Example: I96c30e2
print "Example: I96c30e2";
previous_setting := GetEchoInput();
SetEchoInput(true);
G8723<a, b> := Group< a, b | 
  a^8, b^7, (a * b)^2, (a^-1 * b)^3 >;              
H8723 := sub< G8723 | a^2, a^-1 * b >;
print Index(G8723, H8723);
SetEchoInput(previous_setting);
