import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
package core;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.Reader;
import java.util.ArrayList;
import java.util.List;

public class ExtendedBufferedReader extends BufferedReader {

	public ExtendedBufferedReader(Reader iReader) {
		super(iReader);
	}

	public String getLine(){
		
		try {
			return readLine();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return null;
	}
	
	// Get int from line
	public int getIntFL(){
		try {
			return new Integer(readLine()).intValue();
		} catch (NumberFormatException e) {
			// TODO Auto-generated catch block
			System.out.println("Error check entry data");
		} catch (IOException e) {
			System.out.println("Error check entry data");
			e.printStackTrace();
		}
		return 0;
	}
	
	public List<Integer> getIntListFL(){
		
		String[] aRead;
		try {
			aRead = readLine().split(" ");
		} catch (IOException e) {
			// TODO Auto-generated catch block
			return null;
		}
		List<Integer> aList = new ArrayList<Integer>();
		for (String num:aRead) {
			aList.add(new Integer(num));
		}
		return aList;
		
	}
	
	public List<Long> getLongListFL(){
		
		String[] aRead;
		try {
			aRead = readLine().split(" ");
		} catch (IOException e) {
			// TODO Auto-generated catch block
			return null;
		}
		List<Long> aList = new ArrayList<Long>();
		for (String num:aRead) {
			aList.add(new Long(num));
		}
		return aList;
		
	}
	
	
}
