// Question of 11479 - Is this the easiest problem?
// Mahmud_Jamil (BRUR)
#include<stdio.h>
int main()
{
long int a,b,c,d,i;
while(scanf("%ld",&d)==1)
{
i=1;
while(i<=d)
{
scanf("%ld %ld %ld",&a,&b,&c);
if((a+b)<=c || (b+c)<=a || (c+a)<=b)
{
printf("Case %ld: Invalid\n",i);
}
else if(a<=0 || b<=0 || c<=0)
{
printf("Case %ld: Invalid\n",i);
}
else if(a==b && b==c)
{
printf("Case %ld: Equilateral\n",i);
}
else if(a==b || b==c || c==a)
{
printf("Case %ld: Isosceles\n",i);
}
else
{
printf("Case %ld: Scalene\n",i);
}
i++;
}
}
return 0;
}