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;
	}
}

package com.techy.rajeev;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class Recycled {
	public static int[] toIntArray(String line){
		String[] p = line.trim().split("\\s+");
		int[] out = new int[p.length];
		for(int i=0;i<out.length;i++) out[i] = Integer.valueOf(p[i]);
		return out;
	}
	public static void main(String[] args) throws Exception, IOException {
		BufferedReader br = new BufferedReader(new FileReader("techyrajeev.txt"));
		BufferedWriter bw = new BufferedWriter(new FileWriter("myoutput.out"));
		int num=Integer.valueOf(br.readLine().trim());
		int k=1,count=0;
		while(num>0){
			int arr[]=toIntArray(br.readLine());
			int x=arr[0];
			int y=arr[1];
			String past="";
			for(int i=x;i<=y;i++){
				String temp=i+"";
				for(int j=temp.length()-1,m=1;j>0;j--,m++){
				String test=temp.substring(m)+temp.substring(0,m);
				if(test.equals(past)){
					break;
				}
				int lk=Integer.parseInt(test);
				if(lk>i&&lk<=y){
					count++;
					past=test;
				}
				}
			}
			bw.write("Case #"+k+": "+count);
			bw.newLine();
			count=0;
			num--;
			k++;
		}
		br.close();
		bw.close();
		
	}

}
