/*
 * 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.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class RecycledNumbers {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(new File("resource/input.in"));
		int T = sc.nextInt(); 
		int i = 1;
		while (i<=T) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			System.out.println("Case #"+i+": "+process(A, B));
			i++;
		}
	}
	private static int process(int A, int B) {
		List<String> added = new ArrayList<String>();
		int counter = 0;
		for(int i=A; i<=B; i++){
			String s = i+"";
			for(int j=0; j<s.length()-1; j++){
				char ch = s.charAt(0);
				s = s.concat(ch+"");
				s = s.substring(1, s.length());
				int nx = Integer.valueOf(s);
				if(nx>=A && nx<=B && nx!=i && !added.contains(i+"|"+nx) && !added.contains(nx+"|"+i)){
					counter++;
					added.add(i+"|"+nx);
					added.add(nx+"|"+i);
				}
			}
		}
		return counter;
	}
}
