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();
		}


	}

}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package gcj2012.qual;

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

/**
 *
 * @author scbit
 */
public class P3 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws Exception {
        new P3().run();
    }
    PrintWriter pw;

    void run() throws Exception {
        File infile = new File("C-large.in");
        String outfile = "result";
        pw = new PrintWriter(outfile);
        int N = 0;
        //BufferedReader br=new BufferedReader(new FileReader(infile));
        //N=Integer.parseInt(br.readLine());
        Scanner sc = new Scanner(infile);
        N = sc.nextInt();

        for (int case_i = 1; case_i <= N; case_i++) {
            int result = 0;
            int A=sc.nextInt();
            int B=sc.nextInt();
            for(int n=A;n<=B;n++){
                int d=calcnum(n);
                int m=n;
                for(int i=1;i<d;i++){
                    int gewei=m%10;
                    m=m/10;
                   
                    if(gewei==0) continue;
                    for(int ii=1;ii<d;ii++){
                        gewei=gewei*10;
                    }
                    m=m+gewei;
                    if(m==n) break;
                    if(m>n && m <=B) result++;
                }
            }
            
            
            
            pw.printf("Case #%d: %s\n", case_i, result);
            System.out.printf("Case #%d: %s\n", case_i, result);
        }
        pw.close();
    }
    int calcnum(int num){
        int t=num;
        int c=0;
        
        while(t>0){
            t=t/10;
            c++;
        }
        return c;
        
    }
}
