import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class Q3M {
	public static void main(String[] args) throws Exception {
		compute();
	}

	private static void compute() throws Exception {
		BufferedReader br = new BufferedReader(new FileReader(new File(
				"C:\\work\\Q3\\C-small-attempt0.in")));
		String line = null;
		int i = Integer.parseInt(br.readLine());
		List l = new ArrayList();
		for (int j = 0; j < i; j++) {
			line = br.readLine();
			String[] nums = line.split(" ");
			l.add(calculate(nums));
		}
		writeOutput(l);
	}

	private static int calculate(String[] nums) {
		int min = Integer.parseInt(nums[0]);
		int max = Integer.parseInt(nums[1]);
		int count = 0;
		List l = new ArrayList();
		for (int i = min; i <= max; i++) {
			for (int times = 1; times < countDigits(i); times++) {
				int res = shiftNum(i, times);
				if (res <= max && i < res) {
					if ((!l.contains((i + ":" + res)))) {
						l.add(i + ":" + res);
						l.add(res + ":" + i);
						count++;
					}
				}
			}
		}
		return count;
	}

	private static boolean checkZeros(int temp, int res) {
		if (temp % 10 == 0 || res % 10 == 0)
			return false;
		return true;
	}

	private static int shiftNum(int n, int times) {
		int base = (int) Math.pow(10, times);
		int temp2 = n / base;
		int placeHolder = (int) Math.pow((double) 10,
				(double) countDigits(temp2));
		int res = placeHolder * (n % base) + temp2;
		if (countDigits(res) == countDigits(n)) {
			return res;
		} else {
			return 2000001;
		}
	}

	public static int countDigits(int x) {
		if (x < 10)
			return 1;
		else {
			return 1 + countDigits(x / 10);
		}
	}

	private static void writeOutput(List l) throws Exception {
		StringBuffer b = new StringBuffer();
		int i = 1;
		BufferedWriter br = new BufferedWriter(new FileWriter(new File(
				"C:\\work\\Q3\\ans.txt")));
		for (Iterator iterator = l.iterator(); iterator.hasNext();) {
			br.write("Case #" + i++ + ": " + iterator.next());
			br.newLine();
		}
		br.close();
	}

}
import java.io.BufferedWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.Scanner;
import javax.swing.JOptionPane;

public class Pair
{
    private int A;
    private int B;
    private int pairs;

    public Pair(int A, int B)
    {
        this.A = A;
        this.B = B;
        this.pairs = 0;
    }

    public int getA()
    {
        return this.A;
    }

    public int getB()
    {
        return this.B;
    }

    public int getPairs()
    {
        return this.pairs;
    }

    public String snake(String the_string, int position)
    {
        int len = the_string.length();
        int point = len - position;
        String end = the_string.substring(point);
        String build = end + the_string.substring(0, point);
        return build;
    }

    public void finder(int base, int limit)
    {
        ArrayList<String> doubles = new ArrayList<String>();
        String the_base = Integer.toString(base);
        int len = the_base.length();

        for(int i = 1; i < len; i++)
        {
            String answ = this.snake(the_base, i);

            if(!doubles.contains(answ))
            {
                int answer = Integer.parseInt(answ);

                if(answer <= limit && base < answer)
                {
                    doubles.add(answ);
                    this.pairs++;
                }
            }
        }
    }

    public void find_pairs()
    {
        int the_A = this.A;

        while(the_A < this.B)
        {
            this.finder(the_A, this.B);
            the_A++;
        }
    }

    public static void main(String[] args) throws FileNotFoundException, IOException
    {
        String file = JOptionPane.showInputDialog("Enter the name of the file you wish to use.");
        Scanner in = new Scanner(new FileReader(file));
        FileWriter fstream = new FileWriter("out.txt");
        BufferedWriter out = new BufferedWriter(fstream);

        String integ = in.nextLine();
        int cases = Integer.parseInt(integ);

        for(int i = 0; i < cases; i++)
        {
            String ab = in.nextLine();
            Scanner abs = new Scanner(ab);
            String a = abs.next();
            String b = abs.next();
            int int_a = Integer.parseInt(a);
            int int_b = Integer.parseInt(b);

            Pair current = new Pair(int_a, int_b);
            current.find_pairs();

            System.out.println("Case #" + (i + 1) + ": " + current.getPairs());

            out.write("Case #" + (i + 1) + ": " + current.getPairs() + "\r\n");
        }
        out.close();
    }
}
