---

var
  n,i : longint;
  a,b,c : int64;
begin
    readln(n);
    for i :=1 to n do begin
      readln(a,b,c);
      if (a+b<=c) or (a+c<=b) or (b+c<=a) then writeln('Case ',i,': Invalid')
                                          else
        if (a=b) and (b=c) and (a=c) then writeln('Case ',i,': Equilateral')
                                     else if (a=b) or (b=c) or (a=c) then
                                             writeln('Case ',i,': Isosceles')
                                                                     else
                                                                   writeln('Case ',i,': Scalene');
    end;
end.