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.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class C {

	private static Scanner in = new Scanner(System.in);

	private static void solve(int no) {
		int A = in.nextInt();
		int B = in.nextInt();
		int keta = String.valueOf(A).length();
		int ans = 0;
		Set<Integer> set = new HashSet<>();
		for (int n = A; n < B; n++) {
			set.clear();
			String nstr = String.valueOf(n);
			for (int i = 1; i < keta; i++) {
				String rot = nstr.substring(i) + nstr.substring(0, i);
				int m = Integer.parseInt(rot);
				if (n < m && m <= B && set.add(m)) {
					// System.out.printf("%d %d%n", n, m);
					ans++;
				}
			}
		}
		System.out.printf("Case #%d: %d%n", no, ans);
	}

	public static void main(String[] args) {
		int T = in.nextInt();
		for (int i = 0; i < T; i++) {
			solve(i + 1);
		}
	}

}
