/*
 * 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);
        
    }
    }
}

import java.io.File;
import java.io.IOException;
import java.util.LinkedList;
import java.util.List;
import java.util.Scanner;


public class QuestionC {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		File fileread = new File("C-small-attempt0.in.txt");
		File filewrite = new File(QuestionC.class.getName() + "output.txt");
		GCIFileReader fr = new GCIFileReader(fileread);
		GCIFileWriter fw = new GCIFileWriter(filewrite);
		GCIResult res = new GCIResult();
		String s = fr.getLine();
		int n = Integer.parseInt(s);
		List<Integer> m = new LinkedList<Integer>();
		for (int i=0; i < n ; i++)
		{
			String l = fr.getLine();
			Scanner sc = new Scanner(l);
			int tres = 0;
			int tn = 0;
			int tm = 0;
			int newnum = 0;
			int A = sc.nextInt();
			int B = sc.nextInt();
			int length = Integer.toString(A).length();
			length--;
			for(int j=A ; j <= B ; j++)
			{
				int tlength = length;
				m.clear();
				while(tlength>0)
				{
					tn = (int) (j % (Math.pow(10,tlength)));
					tm = (int) (j / (Math.pow(10,tlength)));
					newnum = (int) (tn*(Math.pow(10, Integer.toString(tm).length())) + tm);
					if (!m.contains(newnum) &&newnum <= B  && j < newnum && Integer.toString(tn).length() == tlength && Integer.toString(tm).length() == (length+1 - tlength))
					if (newnum <= B && tn!=0 && j < newnum)
					{
						tres++;
						m.add(newnum);
					}
					tlength--;
				}
			}
			res.addCase(String.valueOf(tres));
		}
		fw.writeResult(res);
	}

}
