/*
 * 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.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.PrintWriter;

public class Main3 {

	public static final String fileName = "A-small-attempt0.in";
	public static int[] power = new int[] { 1, 10, 100, 1000, 10000, 100000,
			1000000, 10000000, 100000000, 1000000000 };

	/**
	 * @param args
	 * @throws FileNotFoundException
	 */
	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new FileReader(fileName));
		PrintWriter pw = new PrintWriter(new File("out.txt"));
		int num = Integer.valueOf(br.readLine());
		for (int i = 0; i < num; i++) {
			String inline = br.readLine();
			int result = 0;
			String[] tmp = inline.split(" ");
			int a = Integer.valueOf(tmp[0]);
			int b = Integer.valueOf(tmp[1]);
			int size = 0;
			int a2 = a;

			while (a2 > 0) {
				a2 /= 10;
				size++;
			}

			for (int j = a; j < b; j++) {
				int prev = -1;
				for (int k = 1; k < size; k++) {
					int swapNum = swap(j, k, size);

					if (j < swapNum && swapNum <= b && swapNum != prev) {
						prev = swapNum;
						result++;
					}
				}
			}

			pw.println("Case #" + (i + 1) + ": " + result);
		}
		pw.close();
	}

	private static int swap(int raw, int posNum, int size) {
		return (raw % power[posNum]) * power[size - posNum] + raw
				/ power[posNum];
	}

}
