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.Scanner;
import java.util.ArrayList;


public class RecycledNumbers {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		String st = in.nextLine();
		
		int n = Integer.parseInt(st);
		int a[][] = new int[n][2];
		int ans[] = new int[n];
		for(int i = 0; i< n;i++)
		{
			st = in.nextLine();
			String s[] = st.split(" ");
			
			a[i][0] = Integer.parseInt(s[0]);
			a[i][1] = Integer.parseInt(s[1]);
			
			ans[i] = getValue(a[i]);
		}
		
		for(int i=0;i<n;i++)
		{
			System.out.println("Case #"+(i+1)+": " + ans[i]);
		}	

	}
	
	private static int getValue(int a[])
	{
		int count =0;
		int m,n,k,l;
		ArrayList<String> arr = new ArrayList<String>();
		for(int i =a[0];i<= a[1];i++)
		{
			m=i;
			k=10;
			n=0;
			arr.clear();
//			System.out.print( m + "  : ");
			while(m != 0)
			{
				l = m%10;
				m=m/10;
				n=(l*k/10)+n;
				l=Integer.parseInt((String.valueOf(n) + String.valueOf(m)));
				if(l>=a[0] && l <= a[1] && l > i && !arr.contains(String.valueOf(l))) 
				{					
//					System.out.print(l +"  ");
					arr.add(String.valueOf(l));
					count++;
				}
				k*=10;
			}
//			System.out.println();
		}
		return count;
		
	}

}
