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.*;
import java.util.*;

public class Tres {
    public static void main(String[] args) throws IOException {
        BufferedReader in = new BufferedReader(new FileReader("tres.txt"));
        int T = Integer.parseInt(in.readLine());
        for(int t = 0; t < T; t++) {
            String[] temp = in.readLine().split(" ");
            int A = Integer.parseInt(temp[0]);
            int B = Integer.parseInt(temp[1]);
            HashMap<String, Integer> matches = new HashMap<String, Integer>();
            for(int i = A; i <= B; i++) {
                String s = new Integer(i).toString();
                int j;
                for(j = 0; j < s.length(); j++) {
                    String stemp = s.substring(j) + s.substring(0,j);
                    if(matches.containsKey(stemp)) {
                        matches.put(stemp, matches.get(stemp)+1);
                        //System.out.println(s + " matched with " + stemp);
                        break;
                    }
                }
                if(j == s.length()) matches.put(s, 1);
            }
            int answer = 0;
            for(String s : matches.keySet()) {
                int itemp = matches.get(s);
                answer += itemp*(itemp-1)/2;
            }
            System.out.println("Case #" + (t+1) + ": " + answer);
        }
        in.close();
    }
}