/*
 * 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.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;

public class ProblemC {

	public static void main(String[] args) {
		readin();

	}

	private static int count(int a, int b) {
		int numOfDigits = Integer.toString(a).length();
		
		if (numOfDigits == 1) {
				return 0;
		}

		HashSet<Integer> rangeFromAtoB = new HashSet<Integer>();

		for (int i = a; i <= b; i++) {
			rangeFromAtoB.add(i);
		}


		
		int count = 0;

		for (int i = a; i <= b; i++) {

			if (rangeFromAtoB.contains(i)) {
				
				HashSet<Integer> validReordering = new HashSet<Integer>();
				validReordering.add(i);
				rangeFromAtoB.remove(i);

						
				for (int s = 1; s < numOfDigits; s++) {
					
					
					int back =(i / (int)(Math.pow(10, s)) );
					int front = i % ((int)Math.pow(10, s));
					int scale = (int) Math.pow(10, (numOfDigits - s));
									
					
					int reorder = back + front * scale;

				
					if (reorder >= a && reorder <= b) {

						if (!validReordering.contains(reorder)) {
							rangeFromAtoB.remove(reorder);

							validReordering.add(reorder);
						}
					}
				}
				int numOfValidReordering =  validReordering.size();
				
				
				count = count +numOfValidReordering*(numOfValidReordering-1)/2;
				
			}
		}
		return count;
	}

	private static void readin() {

		try {
			BufferedReader in = new BufferedReader(new FileReader("C-large.in.txt"));

			int numOfInput = Integer.parseInt(in.readLine());

			int[][] input = new int[numOfInput][2];
			String[] output = new String[numOfInput];

			for (int i = 0; i < numOfInput; i++) {
				String[] currentline = in.readLine().split("[\\s]+");
				int a = Integer.parseInt(currentline[0]);
				int b = Integer.parseInt(currentline[1]);
				input[i][0] = a;
				input[i][0] = b;
				output[i] = "Case #" + (i+1) + ": " + count(a, b);

			}
			
			BufferedWriter out = new BufferedWriter(new FileWriter(
			"outputC"));
			
			for (int i = 0; i < output.length; i++) {
				System.out.println(output[i]);
				out.write(output[i]+"\n");
			}
			out.flush();
			out.close();
			

		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {

			e.printStackTrace();
		}
	}

}
