import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;


public class GoogleC {
	public String szamol(String input){
		String result="";
		String a=input;
		Integer min=Integer.parseInt(a.substring(0,a.indexOf(' ')));
		a=a.substring(a.indexOf(' ')+1);
		Integer max=Integer.parseInt(a);
		Long count=0l;
		for(Integer i=min; i<=max; i++){
			String e1=i.toString();
			Set<Integer> db=new HashSet<Integer>(); 
			for (int j=1; j<e1.length();j++){
				
				String e2=e1.substring(j)+e1.substring(0,j);
				Integer k=Integer.parseInt(e2);
				if (k>i && k<=max){
					db.add(k);
					//System.out.println(e1+"\t"+e2);
				}
				
			}
			count+=db.size();
		}
		
		return count.toString();
	}
	public static void main(String[] args) {
		GoogleC a=new GoogleC();
		//String filename="input.txt";
		//String filename="C-small-attempt0.in";
		String filename="C-large.in";
		String thisLine;
		try {
			BufferedReader br = new BufferedReader(new FileReader(filename));
			BufferedWriter bw= new BufferedWriter(new FileWriter(filename+".out"));
			thisLine=br.readLine();
			Integer tnum=Integer.parseInt(thisLine);
		     for(int i=0;i<tnum;i++) { // while loop begins here
		    	 	thisLine=br.readLine();
		           System.out.println(thisLine);
		           System.out.println("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		           bw.write("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		         } // end while 
		        // end try
		     br.close();
		     bw.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}


	}

}

import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

/**
 * Created by IntelliJ IDEA.
 * User: nickg
 * Date: 4/13/12
 * Time: 9:57 PM
 * To change this template use File | Settings | File Templates.
 */
public class CodeJamThree {
    public static int numNumbers(int a, int b){
        int digits = (int) Math.log10(b);
        digits++;
        Set<Integer> seen = new HashSet<Integer>();
        int total = 0;
        for(int x = a; x < b; x++){
            int pow = 10;
            seen.clear();
            for(int y = 1; y < digits; y++){
                int moved = move(x, pow);
                pow*= 10;
                if(moved <= b && moved > x)
                    seen.add(moved);
            }
            total+= seen.size();
        }
        return total;
    }

    public static int move(int src, int pow){
        int smallPart = src / pow;
        int bigPart = src % pow;
        int factor =  (int) Math.log10(smallPart) + 1;
        pow = (int) Math.pow(10, factor);
        return bigPart * pow + smallPart;
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int numTrials = scanner.nextInt();
        for(int i = 0; i < numTrials; i++){
            int i1 = numNumbers(scanner.nextInt(), scanner.nextInt());
            System.out.println("Case #" + (i+1) + ": " + i1);
        }
    }
}
