from sys import stdout

n = int(input())

lis = ["Scalene","Isosceles","","Equilateral"]

for i in range(1,n+1) :

    a = [int(s) for s in input().split()]

    stdout.write("Case "+str(i)+": ")

    if sum(a)<=2*max(a): 

        print("Invalid")

        continue

    ct = 0

    if a[0]==a[1]: ct+=1

    if a[1]==a[2]: ct+=1

    if a[2]==a[0]: ct+=1

    print(lis[ct])