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.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;

public class C {

    public static void main(String[] args) throws FileNotFoundException {
        Scanner in = new Scanner(new File(C.class.getSimpleName() + ".in"));
        PrintWriter out = new PrintWriter(new File(C.class.getSimpleName() + ".out"));
        int T = in.nextInt();
        for (int i = 0; i < T; i++) {
            String s = "Case #" + (i + 1) + ": " + new C().solve(in);
            out.println(s);
            System.out.println(s);
        }
        out.close();
    }

    private String solve(Scanner in) {
        int a = in.nextInt();
        int b = in.nextInt();

        int k = 1;
        int c = 1;
        while (k * 10 <= b) {
            k *= 10;
            c++;
        }

        int[] num = new int[10000000];

        for (int n = a; n <= b; n++) {
            int min = n;
            int nn = n;
            for (int i = 0; i < c; i++) {
                nn = (nn / 10) + (nn % 10) * k;
                if (nn >= k) {
                    min = Math.min(min, nn);
                }
            }
            num[min]++;
        }

        long res = 0;

        for (int n : num) {
            res += (1L * n * (n - 1)) / 2;
        }
        return "" + res;
    }
}