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.*;
import java.util.*;
class GoogleRecycle
{
	public static void main(String[] args)
	{
		Integer a,b,m,n;
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		Scanner sc=new Scanner(new InputStreamReader(System.in));
		int t=sc.nextInt();
		String ans[]=new String[t];
		for(int i=0;i<t;i++)
		{
			a=sc.nextInt();
			b=sc.nextInt();
			HashMap<Integer, HashMap<Integer,Integer>> h=new HashMap<Integer, HashMap<Integer,Integer>>();
			int temp=b,d=0,req=0;
//			System.out.println(a+" "+b);
//			System.out.println("********");
			while(temp!=0)
			{
				temp/=10;
				d++;
			}
			for(int j=a;j<b;j++)
			{
				temp=1;
				int rem,quo,oth;
				for(int k=1;k<d;k++)
				{
					temp*=10;
					rem=j%temp;
					quo=j/temp;
					oth=(int) (rem*Math.pow(10,(d-k)) + quo);
					if(oth<=b && oth >=a && oth>j)
					{
						if(h.containsKey(j))
						{
							if(h.get(j).containsKey(oth))
								continue;
							h.get(j).put(oth,1);
//							System.out.println(j+" "+oth);
							req++;
						}
						else
						{
							HashMap<Integer,Integer> ht=new HashMap<Integer,Integer>();
							ht.put(oth,0);
							h.put(j,ht);
//							System.out.println(j+" "+oth);
							req++;
						}
					}
					
				}
			}
			ans[i]="Case #"+(i+1)+": "+req;
//			System.out.println("------");
//			System.out.println(req);	
//			System.out.println("**********");
		}
		for(int i=0;i<t;i++)
			System.out.println(ans[i]);
	}

}
