/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import java.io.File;
import java.io.FileInputStream;
import java.util.Scanner;

/**
 *
 * @author imgps
 */
public class C {
    public static void main(String args[]) throws Exception{
        int A,B;
        int ctr = 0;
        int testCases;
        
        Scanner sc = new Scanner(new FileInputStream("C-small-attempt0.in "));
        testCases = sc.nextInt();
        int input[][] = new int[testCases][2];
        for(int i=0;i<testCases;i++)
        {
          //  System.out.print("Enter input A B: ");
            input[i][0] = sc.nextInt();
            input[i][1] = sc.nextInt();
            
        }
  

for(int k=0;k<testCases;k++){
      ctr = 0;
      A = input[k][0];
      B = input[k][1];
        for(int i = A;i<=B;i++){
            int num = i;
            int nMul = 1;
            int mul = 1; 
            int tnum = num/10;
            while(tnum > 0){
                mul = mul *10;
                tnum= tnum/10;
            }
            tnum = num;
            int n = 0;
            while(tnum > 0 && mul >= 10){
                nMul = nMul * 10;
                n = (num % nMul) * mul + (num / nMul);
                mul = mul / 10;
                tnum = tnum / 10;
                for(int m=num;m<=B;m++){
                    
                    if(n == m && m > num){
                        ctr++;
                    }
                }
                
                
                
         
            }
        }
        System.out.println("Case #"+(k+1)+": "+ctr);
        
    }
    }
}


public class Case {
	
	//Atrib
	public int ind;
	public double a;
	public double b;

	public String resolver() {
		StringBuilder s_out = new StringBuilder("Case #" + ind + ": ");
		
		int cont = 0;
		
		for(int n = (int) a;n<b+1;n++)
			for(int m = n+1;m<=b;m++){
				
				String nn = String.valueOf(n);
				String mm = String.valueOf(m);
//				nn = nn.replace("0", "");
//				mm = mm.replace("0", "");
				if(nn.length() == mm.length() 
						&& Double.parseDouble(nn) < Double.parseDouble(mm)){
					
//					System.out.println("---" + nn + " " + mm);
					
					for(int i=1;i<nn.length();i++){
						
						String aux = nn.substring(i, nn.length()) + nn.substring(0, i);
						if(aux.equals(mm)){
//							System.out.println("---" + nn + " " + mm);
//							System.out.println( aux);
							cont++;
							i = nn.length();
						}
					}
					
				}
			}
		
//		System.out.println(cont);
		s_out.append(cont);
		
		s_out.append("\n");
		return s_out.toString();
	}

}//endClass
