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));
			
		}
		
		
		

	}
	
	
}
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package recyclednumbers;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.HashSet;

/**
 *
 * @author Madhav
 */



public class RecycledNumbers {

    /**
     * @param args the command line arguments
     */
    
    public static HashSet<String> set;
    public static void main(String[] args) throws Exception {
        FileIO fileHandler = new FileIO();
        int totalTestCases = Integer.parseInt(fileHandler.readLine());

        for (int tc = 0; tc < totalTestCases; tc++) {
            set  = new HashSet<String>();
            String input = fileHandler.readLine();
            String nm[] = input.split(" ");
            int start = Integer.valueOf(nm[0]);
            int end = Integer.valueOf(nm[1]);
            for(int i=start; i<=end; i++){
                 String currVal = String.valueOf(i);
                 countPairs(currVal, start, end, nm);
            }
           
            fileHandler.writeLine(String.valueOf(set.size()));
        }
        fileHandler.closeFileIO();
    }
    
    public static void countPairs(String input, int start, int end, String[] nm){
        String clonedValue = new String(input);
        if(nm[1].length() <= 1)
            return;
        else{
            int length = input.length();
            for(int i=0; i<length;i++){
                String rotated = rotate(input);
                int calValue = Integer.valueOf(rotated);
                if(   rotated.charAt(0) != '0' && 
                        calValue <= end && 
                        calValue >= start && 
                        !rotated.equals(clonedValue)
                        ){
                    if(Integer.valueOf(clonedValue) < Integer.valueOf(rotated))
                       set.add(clonedValue+"-"+rotated);
                    else
                       set.add(rotated+"-"+clonedValue);
                }
                   
                input = rotated;
            }
        }
    }
    
    public static String rotate(String input){
        return input.substring(1) + input.charAt(0);
    }
    
    
}


/*
 * File IO is used to read and Write - Keep it simple.
 */
class FileIO {

    private FileReader inFileReader;
    private FileWriter outFileWriter;
    private BufferedReader br = null;
    private BufferedWriter bw = null;
    private int lineNumber = 1;

    public FileIO() throws Exception {
        inFileReader = new FileReader("C:\\CodeJam2012\\in.txt");
        br = new BufferedReader(inFileReader);

        outFileWriter = new FileWriter("C:\\CodeJam2012\\out.txt");
        bw = new BufferedWriter(outFileWriter);
    }

    public FileIO(String in, String out) throws Exception {
        inFileReader = new FileReader(in);
        br = new BufferedReader(inFileReader);

        outFileWriter = new FileWriter(out);
        bw = new BufferedWriter(outFileWriter);
    }

    /*
     * This procedure returns null if all the rows are read from input file.
     */
    public String readLine() throws Exception {
        return br.readLine();
    }

    /*
     * This procedure writes a line to output file as per the google codejam
     * standard
     */
    public void writeLine(String line) throws Exception {
        bw.write("Case #" + lineNumber + ": " + line + "\r\n");
        lineNumber++;
    }

    public void closeFileIO() throws Exception {
        br.close();
        bw.flush();
        bw.close();
    }
}