/*
 * 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.*;

public class RecycledNumbers {

    public static void main(String[] args) {
        BufferedReader reader = null;
        PrintWriter writer = null;

        try {
            reader = new BufferedReader(new FileReader(new File("src/C-small-attempt0.in")));
            writer = new PrintWriter(new BufferedWriter(new FileWriter(new File("src/C-small-attempt0.out"))));

            String line = reader.readLine();
            boolean seenFirstLine = false;
            int caseId = 0;
            while(line != null) {
                if(!seenFirstLine) {
                    seenFirstLine = true;
                }
                else {
                    String[] tokens = line.split(" ");
                    final int A = Integer.parseInt(tokens[0]);
                    final int B = Integer.parseInt(tokens[1]);
                    int numPairs = findNumPairs(A, B);
                    writer.println("Case #" + caseId + ": " + numPairs);
                }
                line = reader.readLine();
                caseId++;
            }
        }
        catch(FileNotFoundException e) {
            e.printStackTrace();
        }
        catch(IOException e) {
            e.printStackTrace();
        }
        finally {
            try {
                reader.close();
                writer.close();
            }
            catch(IOException e) {
                e.printStackTrace();
            }
        }
    }

    static int findNumPairs(final int A, final int B) {
        int numRecycledPairs = 0;
        for (int n=A; n<=B; n++) {
            for (int m = n+1; m<=B; m++) {
                if (isRecycled(n, m)) numRecycledPairs +=1;
            }
        }
        return numRecycledPairs;
    }

    static boolean isRecycled(int n, int m) {
        if(n >= m) {
            throw new IllegalArgumentException("n >= m");
        }
        String nStr = Integer.toString(n);
        String mStr = Integer.toString(m);
        return (mStr + mStr).contains(nStr);
    }
}
