/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package Happy;
import java.io.*;
import java.math.*;
import java.lang.*;
import java.util.*;
import java.util.Arrays.*;
import java.io.BufferedReader;
//import java.io.IOException;
//import java.io.InputStreamReader;
//import java.io.PrintWriter;
//import java.util.StringTokenizer;

/**
 *
 * @author ipoqi
 */
public class Happy {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        new Happy().haha();
    }

    public void haha() {
        BufferedReader in = null;
        BufferedWriter out = null;
        try{
            in = new BufferedReader(new FileReader("C-large.in"));
            out = new BufferedWriter(new FileWriter("LLL.out"));
            int T = Integer.parseInt(in.readLine());
            System.out.println("T="+T);

            //LinkedList<Integer> mm = new LinkedList<Integer>();
            //mm.add(new LinkedList<Integer>());
           //int[][] mm;
           //for(int ii=0;ii<mm.length;ii++){
           //     mm[0][ii] = 1;
           //}


            for(int i=0;i<T;i++){
                String[] line = in.readLine().split(" ");
                int A = Integer.parseInt(line[0]);
                int B = Integer.parseInt(line[1]);
                //System.out.print(" A = "+A+"\n");
                //System.out.print(" B = "+B+"\n");

                int ans = 0;

                
                for(int j=A;j<B;j++){
                    int n=j;
                    if(n>=10){
                        String N = Integer.toString(n);
                        int nlen = N.length();
                        List<Integer> oks = new ArrayList<Integer>();
                        for(int k=0;k<nlen-1;k++){
                            String M = "";
                            for(int kk=1;kk<=nlen;kk++){
                                 M = M + N.charAt((k+kk)%nlen);
                            }
                            int m = Integer.parseInt(M);
                            //System.out.print(" N = "+N+"\n");
                            //System.out.print(" M = "+M+"\n");

                            if(m>n && m<=B) {
                                boolean isNewOne = true;
                                for(int kkk=0;kkk<oks.size();kkk++){
                                    //System.out.print(" KKK = "+oks.get(kkk)+"\n");
                                    if(m==oks.get(kkk)){
                                        isNewOne = false;
                                    }
                                }
                                if(isNewOne){
                                    //System.out.print(" N = "+N+"\n");
                                    //System.out.print(" M = "+M+"\n");
                                    oks.add(m);
                                    ans++;
                                }
                            }
                        }
                    }
                }
                out.write("Case #"+(i+1)+": "+ans+"\n");
                System.out.print("Case #"+(i+1)+": "+ans+"\n");
            }
            in.close();
            out.close();
        }catch(Exception e){
            e.printStackTrace();
            try{
                in.close();
                out.close();
            }catch(Exception e1){
                e1.printStackTrace();
            }
        }
        System.out.print("YES!\n");
    }

}
import java.util.HashMap;
import java.util.Scanner;
import java.util.concurrent.ArrayBlockingQueue;


public class GCJ_3 {
	

	public static HashMap<String, Object> pairs = new HashMap<String, Object>();
	
	//private static final String EMPTY_STR = "";

	public static int combinations(long n1, Long B) {
		int combinations = 0;
		
		StringBuffer Nstr = new StringBuffer(String.valueOf(n1));
		int nInt = Integer.valueOf(Nstr.toString());
		
		ArrayBlockingQueue<Character> queue = new ArrayBlockingQueue<Character>(15);
		for (int i = 0; i < Nstr.length(); i++) {
			queue.add(Nstr.charAt(i));
		}
		
		for (int i = 0; i < Nstr.length(); i++) {
			queue.add(queue.poll());
			Object[] numbers = (Object[]) queue.toArray();
			StringBuffer comb = new StringBuffer();
			for (int j = 0; j < numbers.length; j++) comb.append(numbers[j]);
			if (comb.charAt(0) == '0') continue;
			int p1 = Integer.valueOf(comb.toString());
			if ((p1 > nInt) && (p1 <= B)) {
				combinations++;
				pairs.put(Nstr.toString() + comb.toString(), new Object());
			}
			
		}
		
		
		
		/*StringBuffer Nstr = new StringBuffer(String.valueOf(n1));
		for (int i = 1; i < Nstr.length(); i++) {
			 StringBuffer sb = new StringBuffer(Nstr.subSequence(i, Nstr.length()));
			 sb.append(Nstr.subSequence(0, i));
			 if (Long.valueOf(Nstr.charAt(i) + EMPTY_STR) == 0) {
				 continue;
			 }

			 if (Long.valueOf(Nstr.toString()) >= Long.valueOf(sb.toString())) {
				 continue;
			 }
			 
			 if ((Long.valueOf(sb.toString()) >= B)) {
				 continue;
			 } else {
				 combinations++;
			 }
			 
		}*/
				 

		return combinations;
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int T = scan.nextInt();
		scan.nextLine();
		int nCase = 1;
		while (T-- > 0) {
			
			

			StringBuffer Astr = new StringBuffer(scan.next());
			StringBuffer Bstr = new StringBuffer(scan.next());
			Long A = new Long(Astr.toString());
			Long B = new Long(Bstr.toString());
			
			pairs.clear();

			for (long n = A; n < B; n++) {

				int c = GCJ_3.combinations(n, B);
				
			}
			
			scan.nextLine();
			System.out.println("Case #" + (nCase++) + ": " + pairs.size());

		}

	}

}
