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.io.*;
class Recycled
{
public static void main(String args[])throws IOException
{
BufferedReader x=new BufferedReader(new InputStreamReader(System.in));
int t=Integer.parseInt(x.readLine());
int c[]=new int[t];
for(int i=0;i<t;i++)
{
c[i]=0;
int a=0,b=0;
String q=x.readLine();
for(int j=0;j<q.length();j++)
if(q.charAt(j)==' ')
{
a=Integer.parseInt(q.substring(0,j));
b=Integer.parseInt(q.substring(j+1));
break;
}
for(int j=a;j<=b;j++)
{
String s=""+j;
int y;
do{
s=s.charAt(s.length()-1)+s.substring(0,s.length()-1);
y=Integer.parseInt(s);
if(y>j&&y<=b)
c[i]++;
}
while(y!=j);
}
}
for(int i=0;i<t;i++)
System.out.println("Case #"+(i+1)+": "+c[i]);
}}


