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 ProblemC {

	/**
	 * @param args
	 */
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		String str = sc.nextLine();

		int T = Integer.valueOf(str);
		int[] A = new int[T];
		int[] B = new int[T];
		int[] res = new int[T];
		for (int i = 0; i < T; i++) {
			A[i] = sc.nextInt();
			B[i] = sc.nextInt();
		}

		for (int i = 0; i < T; i++) {
			
			for (int n = A[i]; n < B[i]; n++) {
				Set<String> pairs = new HashSet<String>();
				String jstr = String.valueOf(n);
				for (int j = 0; j < jstr.length() - 1; j++) {

					jstr = jstr.charAt(jstr.length() - 1)
							+ jstr.substring(0, jstr.length() - 1);
					int m = Integer.valueOf(jstr);

					if (n < m && m <= B[i]) {
						if (!pairs.contains(n + "," + m)) {
							pairs.add(n + "," + m);
							res[i]++;
						}
					}
				}

			}
			System.out.println("Case #" + (i + 1) + ": " + res[i]);
		}
	}

}
