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;
	}
}

package Test1;


import java.io.BufferedReader;
import java.io.InputStreamReader;




public class Test1 {

	public static void main(String[] args) {

	String temp1 = null;
	String temp2 = null;
	int n,a,b; 
	
    BufferedReader in = new BufferedReader(new InputStreamReader(System.in)) ;
    try {
    	
    	String str = in.readLine();
    	int result;
    	n = Integer.parseInt(str.trim());
    	for (int i = 1; i <= n; i++) {
    		str = in.readLine();
    		String[] temp = str.split(" ");
    		a = Integer.parseInt(temp[0]);
    		b = Integer.parseInt(temp[1]);
    		result = 0;
    		for (int j=a; j<=b;j++){
    			temp1 = (new Integer(j)).toString();
    			for (int k=1; k<temp1.length(); k++) {

    				String newtemp = temp1.substring(k)+temp1.substring(0, k);
    				int currentnum = Integer.parseInt(newtemp);
    				if (currentnum <= j) continue;
    				temp2 = (new Integer(currentnum)).toString();
    				if (temp2.length() != newtemp.length()) continue;
    				if (currentnum < a || currentnum > b) continue;
    				//System.out.println("Case #"+i+": "+j+":"+currentnum+";;;;;;;"+temp1.substring(0, k)+"====="+temp1.substring(k));
    				result++;
    			    
    			}
    			
    		}
    		System.out.println("Case #"+i+": "+result);
    		//System.out.println("");
    	}
    } catch (Exception e) {
    	
    }
	}
}

