#include<stdio.h>
int main()
{
    long int t,i,a,b,c;
    while(scanf("%ld",&t)==1)
    {
        for(i=1;i<=t;i++)
        {
            scanf("%ld%ld%ld",&a,&b,&c);
            if(a+b<=c||b+c<=a||c+a<=b||a<=0||b<=0||c<=0)
            {
                printf("Case %ld: Invalid\n",i);
            }
            else if(a+b>c||b+c>a||c+a>b)
            {
                if(a==b&&b==c&&a==c)
                {
                    printf("Case %ld: Equilateral\n",i);

                }
                else if(a==b||b==c||c==a)
                {
                    printf("Case %ld: Isosceles\n",i);
                }
                else if(a!=b&&b!=c&&a!=c)
                {
                    printf("Case %ld: Scalene\n",i);
                }
            }
        }

    }
    return 0;

}