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.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.util.HashSet;
import java.util.Set;


public class Prob3 {

	
	public static int calc(int n1, int n2){
		Set<String> set = new HashSet();
		int c=0;
		for(;n1<=n2;n1++){
			String sn = ""+n1;
			Set<String> tested = new HashSet();
			for(int i=0;i<sn.length();i++){				
				String s = sn.substring(i,sn.length())+sn.substring(0,i);
				if(s.charAt(0)=='0') continue;
				if(tested.contains(s)) continue; 
				tested.add(s);
				int s2 = Integer.parseInt(s);
				if(set.contains(s) && s2>=n1 && s2<=n2){
					c++;
				}else{
					set.add(s);
				}
			}
			
		}
		return c;
	}
	
	public static void main(String[] args) {
			
		try{

		  FileInputStream fstream = new FileInputStream("C-large.in");

		  DataInputStream in = new DataInputStream(fstream);
		  BufferedReader br = new BufferedReader(new InputStreamReader(in));
		  String strLine;

		  FileWriter fstream1 = new FileWriter("C-large.out");
		  BufferedWriter out = new BufferedWriter(fstream1);
//		  out.write("Hello Java");
		  //Close the output stream
		  
		  
		  long l = Long.parseLong(br.readLine());
		  for(long i=0; i<l && (strLine = br.readLine()) != null; i++)   {
			  String[] s = strLine.split(" "); 
			  int res = calc(Integer.parseInt(s[0]), Integer.parseInt(s[1]));
			  System.out.println("Case #"+(i+1)+": " +res);
			   out.write("Case #"+(i+1)+": " +res+"\n");
			  
			 // System.out.println("\n\n\n\n\n\n\n\n");
		  }			
		  out.close();
		} catch (Exception e1){
	    	e1.printStackTrace();
		}
	}
		
}
