#include <stdio.h>
#include <iostream.h>

long min(long x, long y) {
  return (x < y ? x : y);
}

long max(long x, long y) {
  return (x < y ? y : x);
}

main(){
  long T;
  cin >> T;
  for (long i=1; i<=T; i++) {
    long a,b,c;
    cin >> a;
    cin >> b;
    cin >> c;
    cout << "Case " << i << ": ";
    long A = max(a,max(b,c)); // sort:  A longest, B middle, C shortest
    long C = min(a,min(b,c));
    long B = (A == a ? max(b,c) : (A == b ? max(a,c) : max(a,b)));  
    if (A-B >= C)
      cout << "Invalid\n";
    else if (A == C)
      cout << "Equilateral\n";
    else if (A == B || B == C)
      cout << "Isosceles\n";
    else
      cout << "Scalene\n";
  }
}