/*
 * 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.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class CRecycled {
    public static void main(String[] args) throws FileNotFoundException {
        Scanner in = new Scanner(new File("C-small.in"));
        PrintWriter out = new PrintWriter("C-small.out");
        final int T = in.nextInt();
        for (int t = 1; t <= T; ++t) {
            final int A = in.nextInt(), B = in.nextInt();
            int result = 0;
            for (int n = A; n <= B; ++n) {
                String s = Integer.toString(n);
                Set<Integer> ms = new HashSet<Integer>();
                for (int i = 0; i+1 < s.length(); ++i) {
                    s = s.substring(1) + s.charAt(0);
                    int m = Integer.parseInt(s);
                    if (m > n && m <= B && s.charAt(0) != '0') {
                        ms.add(m);
                    }
                }
                result += ms.size();
            }
            out.println("Case #" + t + ": " + result);
        }
        out.close();
    }

}
