/*
 * 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.Scanner;


public class C {

	public static void main(String[] args) throws FileNotFoundException {
		Scanner sc = new Scanner(new File("input.txt"));
		int tt = sc.nextInt();
		int cc = 0;
		for(int t = 0; t < tt; ++t) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			
			int len =String.format("%d", B).length(); 
			int ans = 0;
			for(int n = A; n < B; ++n) {
				for(int m = n+1; m <= B; ++m) {
					String x = String.format("%d", n);
					String y = String.format("%d", m);
					boolean found = false;
					for(int i = 1; i < len; ++i) {
						String z = x.substring(i) + x.substring(0, i);
						if(z.equals(y)) {
							found = true;
							break;
						}
					}
					if(found) ans++;
				}
			}
			System.out.format("Case #%d: %s\n", ++cc, ans);
		}
	}
}
