/*
 * 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 Hehe {

	/**
	 * @param args
	 */
	public static int n(int A, int B){
		
		// TODO Auto-generated method stub
		int start=A;
		int end=B;
		int count=0;
		MyNumbers myNumbers = new MyNumbers();
		MyNumbers myCheck = new MyNumbers();
		for( int k = start; k<=end; k++)
		{
			int a =k;
			
			
			String s = Integer.valueOf(a).toString();
			for(int i=0; i<s.length(); i++)
			{
				CharSequence c = s.subSequence(0, i);
				String s2 = s.concat(c.toString());
				s2 = s2.substring(i);
				
				int n = Integer.parseInt(s2);

				if(n<=end && n>=start  && a!=n && !myCheck.numbers.contains(n))
				{
					//System.out.println(s+"  "+s2);
					myNumbers.add(n);
					myCheck.add(a);
					count++;
				}
				
			}
			//myNumbers.numbers.removeAll(myCheck.numbers);
			
		}
		
		System.out.println(myNumbers.numbers.size()+"  count: "+count);
		return count;

	}

}
