/*
 * 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.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;

public class ProblemC {

	public static void main(String[] args) {
		readin();

	}

	private static int count(int a, int b) {
		int numOfDigits = Integer.toString(a).length();
		
		if (numOfDigits == 1) {
				return 0;
		}

		HashSet<Integer> rangeFromAtoB = new HashSet<Integer>();

		for (int i = a; i <= b; i++) {
			rangeFromAtoB.add(i);
		}


		
		int count = 0;

		for (int i = a; i <= b; i++) {

			if (rangeFromAtoB.contains(i)) {
				
				HashSet<Integer> validReordering = new HashSet<Integer>();
				validReordering.add(i);
				rangeFromAtoB.remove(i);

						
				for (int s = 1; s < numOfDigits; s++) {
					
					
					int back =(i / (int)(Math.pow(10, s)) );
					int front = i % ((int)Math.pow(10, s));
					int scale = (int) Math.pow(10, (numOfDigits - s));
									
					
					int reorder = back + front * scale;

				
					if (reorder >= a && reorder <= b) {

						if (!validReordering.contains(reorder)) {
							rangeFromAtoB.remove(reorder);

							validReordering.add(reorder);
						}
					}
				}
				int numOfValidReordering =  validReordering.size();
				
				
				count = count +numOfValidReordering*(numOfValidReordering-1)/2;
				
			}
		}
		return count;
	}

	private static void readin() {

		try {
			BufferedReader in = new BufferedReader(new FileReader("C-small-attempt0.in.txt"));

			int numOfInput = Integer.parseInt(in.readLine());

			int[][] input = new int[numOfInput][2];
			String[] output = new String[numOfInput];

			for (int i = 0; i < numOfInput; i++) {
				String[] currentline = in.readLine().split("[\\s]+");
				int a = Integer.parseInt(currentline[0]);
				int b = Integer.parseInt(currentline[1]);
				input[i][0] = a;
				input[i][0] = b;
				output[i] = "Case #" + (i+1) + ": " + count(a, b);

			}
			
			BufferedWriter out = new BufferedWriter(new FileWriter(
			"outputC"));
			
			for (int i = 0; i < output.length; i++) {
				System.out.println(output[i]);
				out.write(output[i]+"\n");
			}
			out.flush();
			out.close();
			

		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {

			e.printStackTrace();
		}
	}

}
