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.*;

public class C
{
	public static int roll (int i, int a, int b)
	{
		int found = 0;
		int digits = (""+i).length();
		
		int[] vit = new int[digits];
		
		int magic;
		
		int keep, move,done;
		
		
		for (int d = 1; d < digits; d++)
		{
			magic = (int)Math.pow(10, d);
			keep = i/magic;
			move = i%magic;
			magic = (int)Math.pow(10, digits-d);
			done = keep + (move * magic);
		
			
			if (a <= done && done <= b && done < i)
			{
				vit[found] = done;
				found++;
			}
		}
		
		if (found > 1) 
		{
			Arrays.sort(vit);
			for (int j = 0; j < vit.length - 1; j++)
				if (vit[j] != 0 && vit[j] == vit[j+1])
					found--;
		}
		return found;
	}

	public static void main(String... args) throws Exception
	{
		BufferedReader in = new BufferedReader (new FileReader( "C-large.in" ));
		
		String line;
		in.readLine(); 
		int casenum = 1;

		int a,b;
			
		String[] nums;
		while ( (line = in.readLine()) != null)
		{
			nums = line.split(" ");
			
			a = Integer.valueOf(nums[0]);
			b = Integer.valueOf(nums[1]);
			
			int result = 0;
			for (int m = a; m <= b; m++)
				result += roll(m,a,b);
	
			System.out.println("Case #" + casenum + ": " + (result));
			casenum++;
		}
	}
}