import java.io.*;
import java.util.*;

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

package ch.googlecodejam.qualround;

import java.util.ArrayList;
import java.util.List;

public class RecycledNumbers {

    public static String solve(List<List<String>> values) {

        StringBuilder result = new StringBuilder();

        int numberOfLine = 1;
        for (List<String> line : values) {
            int minValue = Integer.parseInt(line.get(0));
            int maxValue = Integer.parseInt(line.get(1));

            int numberOfRecycledNumbers = getNumberOfRecycledNumbers(minValue,
                    maxValue);

            result.append("Case #" + numberOfLine + ": "
                    + numberOfRecycledNumbers + "\n");
            numberOfLine++;
        }

        return result.toString();
    }

    private static int getNumberOfRecycledNumbers(int minValue, int maxValue) {

        int numberOfRececlyedNumbers = 0;
        for (int numberToTest = minValue; numberToTest < maxValue; numberToTest++) {
            numberOfRececlyedNumbers += hasRecycledNumber(numberToTest,
                    maxValue);
        }
        return numberOfRececlyedNumbers;
    }

    private static int hasRecycledNumber(int number, int maxValue) {

        String originalNumber = String.valueOf(number);
        int numberOfRecycledNumber = 0;
        List<String> alreadyRecycled = new ArrayList<String>();

        for (int i = originalNumber.length() - 1; i > 0; i--) {
            String recycledNumber = getSwapedNumber(i, originalNumber);

            if (recycledNumber.charAt(0) != '0') {
                int valueRecycledNumber = Integer.parseInt(recycledNumber);
                if (valueRecycledNumber > number
                        && valueRecycledNumber <= maxValue && !alreadyRecycled.contains(recycledNumber)) {
                    numberOfRecycledNumber++;
                    alreadyRecycled.add(recycledNumber);
                } 
            }

        }

        return numberOfRecycledNumber;
    }

    public static String getSwapedNumber(int startIndex, String original) {

        StringBuilder swaped = new StringBuilder();
        swaped.append(original.substring(startIndex));
        swaped.append(original.substring(0, startIndex));
        return swaped.toString();
    }
}
