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.*;
import java.io.*;
class Caso{
	int a;
	int b;
	public void leer(Scanner s){
		a=s.nextInt();
		b=s.nextInt();
	}
	public Caso(){
	}
	public String obtenerRespuesta(){
		long resultado=0;
		for(int i=a;i<=b;i++){
			int j=1;
			int nd=(int)Math.log10(i)+1;
			HashMap<Integer,Integer>h=new HashMap<Integer,Integer>();
			while(j<nd){
				int d=(int)Math.pow(10,j);
				int r=i%d;
				int sg=(i-r)/d;
				int mt=(int)(r*Math.pow(10,nd-j))+sg;
				if(h.get(mt)==null&&i<mt&&mt<=b){
					h.put(mt,1);
					resultado++;
				}
				j++;
			}
		}
		return resultado+"";
	}
}
public class Caso1{
	public void iniciar(){
		Scanner s=null;
		PrintStream ps=null;
		try{
			ps=new PrintStream(new FileOutputStream(new File("output.txt")));
			s=new Scanner(new FileReader("input.txt"));
			StringBuffer entrada=new StringBuffer();
			while(s.hasNextLine()){
				entrada.append(s.nextLine()+"\n");
			}
			s=new Scanner(entrada+"");
		}catch(Exception e){
			e.printStackTrace();
		}
		int numeroCasos=s.nextInt();
		Caso[]casos=new Caso[numeroCasos];
		for(int i=0;i<numeroCasos;i++){
			casos[i]=new Caso();
		}
		for(int k=0;k<numeroCasos;k++){
			casos[k].leer(s);
		}
		for(int i=0;i<casos.length;i++){
			ps.println("Case #"+(i+1)+": "+casos[i].obtenerRespuesta());
		}
	}
	public static void main(String[]args){
		(new Caso1()).iniciar();
	}
}