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

import java.util.HashSet;

/**
 *
 * @author vandit
 */
public class RecycleNumbers {

    private HashSet<String> numbers = new HashSet<String>();
    private HashSet<String> initialTempNumbers = new HashSet<String>();
    private HashSet<String> finalTempNumbers = new HashSet<String>();

    HashSet<Pair> numberPairs = new HashSet<Pair>();


    private void findRecycledNumbers(int start, int end, int places) {


        for (int i = start; i <= end; i++) {
            String initialNumber = Integer.toString(i);
            //if (!(numbers.contains(initialNumber) || finalTempNumbers.contains(initialNumber))) {

                StringBuffer tempNumber = new StringBuffer(initialNumber);
                int len = tempNumber.length();
                int startIndexToMove = len - places;
                String tempString = tempNumber.substring(startIndexToMove);
                if ((places == 1 && tempString.equals("0")) || tempString.charAt(0) == '0') {
                    continue;
                }
                tempNumber.delete(startIndexToMove, len);
                String finalTempNumber = tempString + tempNumber.toString();

                if (! (finalTempNumber.equals(initialNumber) || Integer.parseInt(finalTempNumber) > end || Integer.parseInt(finalTempNumber) < Integer.parseInt(initialNumber))) {
                    numbers.add(initialNumber);
                    finalTempNumbers.add(finalTempNumber);
                    Pair pair = new Pair(finalTempNumber,initialNumber);
                    numberPairs.add(pair);
                }
            }

        

    }

    public HashSet<Pair> findAllRecycledNumbers(int start, int end) {
        int length = Integer.toString(start).length();
        for (int i = 1; i < length; i++) {
            findRecycledNumbers(start, end, i);
        }
        return numberPairs;
    }
}

import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.Scanner;


public class E3 {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub


		Scanner sc = null;
		
		sc = new Scanner(System.in);
		
		/*try {
			sc = new Scanner(new File("E3.txt"));
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}*/
		
		
		int fases = sc.nextInt();
		
		
		for(int j=1; j<=fases; ++j){
			
			int n1 = sc.nextInt();
			int n2 = sc.nextInt();
			int casos = 0;
			
			for(int k=n1; k<=n2; ++k){
				String s = k + "";
				
				int l = s.length();
				
				ArrayList<Integer> arr = new ArrayList<Integer>();
				
				for(int i=1; i<l; ++i){
					String s2 = s.substring(i) + s.substring(0, i);
					
					if(s2.startsWith("0"))
						continue;
					
					int ns = Integer.parseInt(s2);
					
					if(ns >= n1 && ns <= n2 && ns != k && !arr.contains(ns)){
						
						casos++;
						arr.add(ns);
						//System.out.println(ns);
					}
				}
				
			}
			
			System.out.println("Case #" + j + ": " + casos / 2);
		}
		
		
	}

}
