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.*;

public class recycled {

	/**
	 * @param args
	 */
    public static int solve(BufferedReader reader) throws IOException {
    	
		int cpt = 0;
		
		String[] entiers = new String[2];
		
		entiers = reader.readLine().split(" ");
 		
		if(Integer.parseInt(entiers[0]) < 10) return 0;
		else {
			for(int i = Integer.parseInt(entiers[0]); i <= Integer.parseInt(entiers[1]); i++)
				cpt += NombreRecycle(entiers[0], entiers[1], Integer.toString(i));
		}
		
		return cpt;
    }
    
    public static int NombreRecycle(String a, String b, String n) throws IOException {
    	
    	int cpt = 0;
    	
    	for(int i = 1; i < n.length() ; i++)
    		if( Integer.parseInt(n) < Integer.parseInt(n.substring(i) + n.substring(0, i)) && Integer.parseInt(n.substring(i) + n.substring(0, i)) <= Integer.parseInt(b)) cpt++;
    	
    	return cpt;
    }
    
    
    public static void main(String[] args) {

    	
		try {
			InputStream ips = new FileInputStream("recycled.in"); 
			InputStreamReader ipsr = new InputStreamReader(ips);
			BufferedReader br = new BufferedReader(ipsr);
			
			int cases = Integer.valueOf(br.readLine());
			
			for (int i = 1; i <= cases; i++) {
				imprimer(i, solve(br));
			}
		} catch (IOException x) {
			System.err.println(x);
		} catch (NumberFormatException x) {
			System.err.println(x);
		}
    }

    static void imprimer(int numero, int resultat) {
		
		try {
			FileWriter fw = new FileWriter ("recycled.out",true);
			BufferedWriter bw = new BufferedWriter (fw);
			PrintWriter fichierSortie = new PrintWriter (bw); 
				fichierSortie.println ("Case #" + numero + ": " + resultat); 
			fichierSortie.close();
		}
		catch (Exception e){
			System.out.println(e.toString());
		}
		
	}
}
