/*
 * 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.*;

import java.lang.*;

class RotateNumber {   
	public static long RotateNumber(long number, long A, long B)
	{
		long start = number;
		long sum = 0;
		int numdigits = (int) Math.log10((double)number); // would return numdigits - 1
		int multiplier = (int) Math.pow(10.0, (double)numdigits);
		while(true)
		{
			long q = number / 10;
			long r = number % 10;
			number = number / 10;
			number = number + multiplier * r;
			if(number == start)
				break;
			if (start < A) break;
			if (start >= A && start < number && number <= B) {
				sum++;
			}
		}
		return sum;
	}
	public static void main(String[] args) throws IOException {

		FileInputStream fstream = new FileInputStream("/tmp/codejam/A-small-practice.in");
		//DataInputStream in = new DataInputStream(fstream);
		BufferedReader br = new BufferedReader(new InputStreamReader(fstream));
		PrintWriter out = new PrintWriter(new File("/home/peeyushk/tmp/output.ou"));
		String strLine;
		strLine = br.readLine().trim();
		int test = Integer.parseInt(strLine);
		for (int i=0;i<test;i++) {
			strLine = br.readLine().trim();
			long count = 0;
			String[] strings = strLine.split(" ");
			long A = Integer.parseInt(strings[0].trim());
			long B = Integer.parseInt(strings[1].trim());
			for (long num = A; num <= B; num++) {
				count = count + RotateNumber(num, A, B);
			}
			int k = i+1;
			out.println("Case #" + k + ": " + count);
		}
		out.flush();
		out.close();
		br.close();
	}
}