/*
 * 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.*;
import java.util.*;

public class RecycledNumbers  {

    private static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));    
    private static StringTokenizer st;

    public static void main ( String [] args ) throws IOException
    {
	int T = Integer.parseInt(br.readLine());

	for(int i = 0;i < T; i++) {
	    System.out.print("Case #" + (i+1) + ": ");
	    new RecycledNumbers().cal();
	}
    }

 
    private void cal() throws IOException 
    {
	int A, B;
	st = new StringTokenizer(br.readLine());
	A = Integer.parseInt(st.nextToken());
	B = Integer.parseInt(st.nextToken());

	int len = Integer.toString(A).length();
	//	if ( len == 1 ) System.out.println("0");


	int num = 0;
	for(int n = A; n < B; n++) {
	    HashSet<Integer> s = new HashSet<Integer>();
	    for(int i = 1; i < len; i++) {
		int m = getRecycledNumbers(n, i);
		if ( n < m && m <= B && !s.contains(m)) {
		    //		    System.out.println("[" + num + "] (n,m) = (" + n + "," + m + ")");
		    s.add(m);
		    num++;
		}
	    }
	}

	System.out.println(num);

    }

    private int getRecycledNumbers(int n, int i) {
	String target = Integer.toString(n);
	String compared = target.substring(i) + target.substring(0, i);
	return Integer.parseInt(compared);
    }

}
