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.FileInputStream;
import java.io.FileNotFoundException;
import java.util.Scanner;

/**
 * @author fedor.korotkov
 */
public class QualificationC {
    public static void main(String[] args) throws FileNotFoundException {
        final Scanner in = new Scanner(new FileInputStream("in.txt"));
        int t = in.nextInt();
        for (int i = 1; i <= t; ++i) {
            int a = in.nextInt();
            int b = in.nextInt();
            System.out.print("Case #" + i + ": ");
            System.out.println(solve(a, b));
        }
    }

    private static int solve(int a, int b) {
        int result = 0;
        for (int i = a; i < b; ++i) {
            for (int j = i + 1; j <= b; ++j) {
                if (recycled(i, j)) ++result;
            }
        }
        return result;
    }

    private static boolean recycled(int i, int j) {
        String tmp = Integer.toString(i) + Integer.toString(i);
        return tmp.indexOf(Integer.toString(j)) != -1;
    }
}
