import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int t=sc.nextInt();
		int casos=1, a, b, n, m, cont;
		while(t!=0){
			a=sc.nextInt();
			b=sc.nextInt();
			if(a>b){
				int aux=a;
				a=b;
				b=aux;
			}
			System.out.printf("Case #%d: ",casos++);
			if(a==b){
				System.out.printf("%d\n",0);
			}else{
				cont=0;
				for(n=a;n<b;n++){					
					for(m=n+1;m<=b;m++){					
						if(isRecycled(n,m)) cont++;
					}
				}
				System.out.printf("%d\n",cont);
			}
			t--;
		}		
	}
	public static boolean isRecycled(int n1, int n2){
		String s1, s2, aux;
		s1 =  String.valueOf( n1 );
		s2 =  String.valueOf( n2 );		
		boolean r = false;		
		for(int i=0;i<s1.length();i++){
			aux="";
			aux=s1.substring(i,s1.length())+s1.substring(0,i);
//			System.out.println(aux);
			if(aux.equals(s2)){
				r=true;
				break;
			}
		}		
		return r;
	}
}

import java.util.Scanner;

public class C {
	
	public static void main(String[] args) {
		
		Scanner in = new Scanner(System.in);
		
		int T = in.nextInt(); in.nextLine();		
		
		//for each test case
		for (int i = 1; i <= T; i++)
		{
			int A = in.nextInt();
			int B = in.nextInt();
			
			int result = 0;
			
			for (int n = A; n <= B - 1; n++)
				for (int m = n + 1; m <= B; m++)
					if (isRecycledPair(n, m))
						result++;
			
			System.out.format("Case #%d: %d\n", i, result);
		}
	}
	
	private static boolean isRecycledPair(int n, int m) {
		
		String strN = "" + n;
		String strM = "" + m;
		
		int length = strN.length();
		
		for (int i = 0; i < length; i++)
		{
			boolean good = true;
			for (int j = 0; j < length; j++)
			{
				if (strN.charAt(j) != strM.charAt((i + j) % length))
				{
					good = false;
					break;
				}
			}
			if (good)
				return true;
		}
		
		return false;
	}
}