import java.util.*;
import java.io.*;

public class recycled_numbers {
	public static void main(String[]a) throws Exception{
		
		Scanner f = new Scanner(new File(a[0]));
		int result=0;
		int A,B;
		String n,m;
		HashSet<String> s=new HashSet<String>();
		
		int T=f.nextInt();	//T total case count
		for (int t=1; t<=T;t++){//for each case t
			
			s.clear();
			result=0;				//reset
			A=f.nextInt();B=f.nextInt();	//get values for next case
			
			if (A==B)result=0;//remove case not meeting problem limits 
			else{
				for(int i=A;i<=B;i++){//for each int in range
					n=Integer.toString(i);
					m=new String(n);
					//System.out.println(n);
					for (int j=1;j<n.length();j++){//move each digit to the front & test
						m = m.substring(m.length()-1)+m.substring(0,m.length()-1);
						if(m.matches("^0+[\\d]+")!=true &&
								Integer.parseInt(m)<=B &&
								Integer.parseInt(n)<Integer.parseInt(m)){
							s.add(new String(n+","+m));
							//result++;
							//System.out.println(" matched: "+m);
						}
						
					}
				}
				result = s.size();
			}

			//display output
			System.out.println("Case #" + t + ": " + result);
		}
	}
}
/*
 * 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();
    }
}