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.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;

public class RecycledNumbers {
    private PrintWriter out;
    private Scanner in;

    private void init() {
    }

    private void solve() {
        int A = in.nextInt();
        int B = in.nextInt();

        int r = 0;
        for (int i = A; i <= B; i++) {
            int j = rotate(i);
            while (i != j) {
                if (i < j && j <= B) {
                    r++;
                }
                j = rotate(j);
            }
        }
        out.println(r);
    }

    private int rotate(int number) {
        int pos = 1;
        while (number % 10 == 0) {
            pos *= 10;
            number /= 10;
        }
        int rest = number % 10;
        number /= 10;
        int numberCopy = number;
        while (numberCopy > 0) {
            pos *= 10;
            numberCopy /= 10;
        }
        return rest * pos + number;
    }

    private void runTests() {
        init();

        int T = Integer.parseInt(in.nextLine());
        for (int i = 0; i < T; i++) {
            out.print("Case #" + (i + 1) + ": ");
            solve();
        }
    }

    private void run() {
        try {
            runTests();
        } finally {
            close();
        }
    }

    private void close() {
        out.close();
        in.close();
    }

    public RecycledNumbers() throws FileNotFoundException {
        this.in = new Scanner(new File("C-large.in"));
        this.out = new PrintWriter(new File("C-large.out"));
    }

    public static void main(String[] args) throws FileNotFoundException {
        new RecycledNumbers().run();
    }
}
