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 codejam;
import java.util.Scanner;
import java.util.StringTokenizer;
public class Codejam {
    static final Scanner keyboard = new Scanner(System.in);
    public static void main(String[] args) {
    int casos = Integer.parseInt(keyboard.nextLine());
        for(int x=1; x<=casos;x++)
        {
           String a, b;
           String A[]=new String[1000];
           String linea;
           linea = keyboard.nextLine();
            	StringTokenizer tokens= new StringTokenizer(linea," ");
		a = tokens.nextToken();
                b = tokens.nextToken();
           int counter=0;
           for (int i=Integer.parseInt(a); i<Integer.parseInt(b); i++)
                {
                    String c = "" +i;
                    char[] achar = c.toCharArray();
                    if (achar.length==2)
                    {
                        int one=Integer.parseInt("" +achar[1])*10+Integer.parseInt("" +achar[0]); 
                        if (one<=Integer.parseInt(b)&&one>i)
                        counter+=1;
                    }
                     if (achar.length==3)
                    {
                        int one= Integer.parseInt("" +achar[2])*100+Integer.parseInt("" +achar[0])*10+Integer.parseInt("" +achar[1]); 
                        if (one<=Integer.parseInt(b)&&one>i)
                        counter+=1;
                        int two= Integer.parseInt("" +achar[1])*100+Integer.parseInt("" +achar[2])*10+Integer.parseInt("" +achar[0]); 
                        if (two<=Integer.parseInt(b)&&two>i)
                        counter+=1;
                    }
                }
           System.out.println("Case #" +x +": " +counter);
        }     
    }
}
