/*
 * 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.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.HashSet;
import java.util.Set;

public class Recycled {
	public static void main(String[] args) throws Exception {
		FileInputStream fstream = new FileInputStream("text.in");
		// Get the object of DataInputStream
		DataInputStream in = new DataInputStream(fstream);
		BufferedReader br = new BufferedReader(new InputStreamReader(in));
		String strLine;
		int count = 0;
		int totalLines;
		// ArrayList<List> numbers = new ArrayList<List>();
		while ((strLine = br.readLine()) != null) {
			if (count == 0) {
				totalLines = Integer.parseInt(strLine);
			} else {
				int recycled = 0;
				String[] nums = strLine.split(" ");
				int startNum = Integer.parseInt(nums[0]);
				int endNum = Integer.parseInt(nums[1]);
				for (int i = startNum; i <= endNum; i++) {
					recycled += testInteger(i, endNum);
					
				}
				System.out.println("Case #" + count + ": " + recycled);
			}
			count++;
		}
		in.close();
	}

	private static int testInteger(int i, int endNum) {
		String numStr = String.valueOf(i);
		int currentCount = 0;
		Set<String> matches = new HashSet<String>();
		for (int j = 1; j < numStr.length(); j++) {
			String newNumStr = swapNumber(numStr);
			if ((Integer.parseInt(newNumStr) > i) && ((Integer.parseInt(newNumStr) <= endNum))) {
//				System.out.println(i+" "+newNumStr);
				currentCount++;
				matches.add(newNumStr);
		//	} else {
		//		return 0;
			}
			numStr = newNumStr;
		}
		return matches.size();
	}

	private static String swapNumber(String numStr) {
		String lastDigit = numStr.substring(numStr.length()-1);
		String firstDigits = numStr.substring(0, numStr.length()-1);
		return lastDigit.concat(firstDigits);
	}
	
	
}
