import java.util.HashMap;
import java.util.HashSet;
import java.util.Scanner;

public class Recycle {

	private static HashMap<Integer, HashSet<Integer>> map = new HashMap<Integer, HashSet<Integer>>();
	private static HashSet<Integer> toSkip = new HashSet<Integer>();
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner reader = new Scanner(System.in);
		int T = reader.nextInt();
		for (int tc = 1; tc <= T; tc++) {
			int a = reader.nextInt();
			int b = reader.nextInt();
			long before = System.currentTimeMillis();
			int res = doit(a, b);
			System.out.printf("Case #%d: %d\n", tc, res);
			long after = System.currentTimeMillis();
//			System.out.println("time taken: " + (after - before));
		}
	}

	private static int doit(int a, int b) {
		int count = 0;
		HashSet<Integer> skip = new HashSet<Integer>(toSkip);
		for (int i = a; i <= b; i++) {
			if (skip.contains(i))
				continue;
			HashSet<Integer> arr = generate(i);
//			if(arr.size() > 1) {
//				map.put(i, arr);
//			}
			// System.out.println(i + " --> " +
			// Arrays.deepToString(arr.toArray()));
			int temp = 0;
			if (arr.size() > 1) {
				for (int x : arr) {
					if (x >= a && x <= b) {
						temp++;
						skip.add(x);
					}
				}
				count += temp * (temp - 1) / 2;
			}
//			System.out.println("not skipping " + i + " gen: " + arr.size()+ " " + (temp * (temp - 1) / 2));
		}
		return count;
	}

	private static HashSet<Integer> generate(int num) {
		if(map.containsKey(num)) {
			HashSet<Integer> list = map.get(num);
			return list;
		}
		HashSet<Integer> list = new HashSet<Integer>();
		String s = "" + num;
		list.add(num);
		int len = s.length();
		for (int i = 1; i < len; i++) {
			String temp = s.substring(i) + s.substring(0, i);
			// System.out.println("temp: " + temp);
			if (temp.charAt(0) == '0')
				continue;
			int x = Integer.parseInt(temp);
			if( x <= 2000000) {
				list.add(x);
			}
		}
		if(list.size() > 1) {
			map.put(num, list);
		} else {
			toSkip.add(num);
		}
		return list;
	}

}

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

package javaapplication2;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.Scanner;

/**
 *
 * @author portz
 */
public class Main {

    /**
     * @param args the command line arguments
     */
    public static void readFile(String filename,String outFile){
//        Buffer inpfile=new Buffer() {}
        Scanner scanner=null;

         Writer out=null;
        try {
            out = new OutputStreamWriter(new FileOutputStream(outFile));
        } catch (FileNotFoundException ex) {
System.out.println(ex.toString());
        }

        try {
            scanner = new Scanner(new FileInputStream(filename));
            try {
                  String text="";
                  int i=0;
                  int limit=0;
                  String []abstr;int A;int B;
                  while (scanner.hasNextLine()){

                    text=scanner.nextLine();
                    if(i==0){
                        i=1;
                        limit=Integer.parseInt(text);
                    }else{
                        if(i<=limit){
                            try {
                                abstr=text.split(" ");
                                A=Integer.parseInt(abstr[0]);
                                B=Integer.parseInt(abstr[1]);
                                out.write("Case #"+i+": "+getrecycle( A, B));
                                if(i!=limit){
                                    out.write("\n");
                                }
                                i++;
                            } catch (IOException ex) {
System.out.println(ex.toString());
                            }
                        }
                    }
                  }
             }
            finally{
                 if(out!=null){
                    try {
                        out.close();
                    } catch (IOException ex) {
                        System.out.println(ex.toString());
                    }
                 }
                  scanner.close();
            }
        } catch (FileNotFoundException ex) {
            System.out.println(ex.toString());
            //Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
        }

    }

    public static int getrecycle(int A,int B){
        String nostr;//=""+n;
        int digitno;//=nostr.length();
        int m;//=n;
        String temp;//=""+n;
        int j=0;

        for(int n=A;n<=B;n++){
            //System.out.println("---------------------------------");
             nostr=""+n;
             digitno=nostr.length();
             m=n;
             temp=""+n;
             //j=0;
          // System.out.println(temp);
           if(temp.charAt(0)=='0'){

           }else{
            for(int i=0;i<digitno-1;i++){
                temp=temp.charAt(digitno-1)+temp;
                temp=temp.substring(0, digitno);
                if(temp.charAt(0)=='0'){

                }else{
                   m=Integer.parseInt(temp);

                   if(m>n&&m<=B&&m>=A){
                       System.out.println(m);
                       j++;
                   }
                }
            }
           }
        }
        return j;
    }
    public static void main(String[] args) {
        readFile("C-small-attempt0.in", "C-small-attempt0.out");
        // TODO code application logic here
//        System.out.println(getrecycle( 1, 9));//1 9 10 40 100 500 1111 2222
//        System.out.println(getrecycle( 10, 40));//1 9 10 40 100 500 1111 2222
//        System.out.println(getrecycle( 100, 500));//1 9 10 40 100 500 1111 2222
//        System.out.println(getrecycle( 1111, 2222));//1 9 10 40 100 500 1111 2222
    }

}
