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.*;
import java.io.*;

public class Main {

	public static boolean recycledNumber(int n, int m) {
		String N = String.valueOf(n);
		String M = String.valueOf(m);

		for(int i = 0; i < N.length(); i++) {
			String firstPart = N.substring(0, i);
			String endPart = N.substring(i, N.length());
			String combined = endPart + firstPart;
			if(M.equals(combined)) return true;
		}
		return false;
	}



	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(new File("testcase.in"));
		int testcases = sc.nextInt();
		sc.nextLine();

		for(int testcase = 1; testcase <= testcases; testcase++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int recycledPairs = 0;

			for(int n = A; n < B; n++) {
				for(int m = n+1; m <= B; m++) {
					if(recycledNumber(n, m)) recycledPairs++;
				}
			}

			System.out.printf("Case #%d: %d\n", testcase, recycledPairs);
		}
	}
}