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;
	}
}

/*
ID: lovelacer
LANG: JAVA
PROG: candy
*/
import java.io.*;
import java.util.*;
public class recycle
{
    public static void main (String [] args) throws IOException
    {
        BufferedReader f = new BufferedReader(new FileReader("recycle.txt"));
        PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("recycle1.txt")));
        
        int T = Integer.parseInt(f.readLine());
        
        HashSet<String> checked;
        
        String[] nums;
        
        for(int k = 1; k <= T; k++)
        {
            nums = f.readLine().split(" ");
            int A = Integer.parseInt(nums[0]), B = Integer.parseInt(nums[1]), ans = 0;
            for(int n = A; n < B; n++)
            {
                checked = new HashSet<String>();
                String a = "" + n;
                String tmp = a.substring(1) + a.substring(0, 1);
                while(!tmp.equals(a))
                {
                    if(Integer.parseInt(tmp) <= B && Integer.parseInt(tmp) > n && !checked.contains(tmp))
                    {
                        ans++;
                        checked.add(tmp);
                    }
                    tmp = tmp.substring(1) + tmp.substring(0, 1);
                }
            }
            
            out.println("Case #" + k + ": " + ans);
        }
        
        out.close();
        System.exit(0);
    }
}