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

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 *
 * @author JOSE
 */
public class RecycledNumbers {

    public void process() {
        ArrayList<String> inputList = readFile("C-small-attempt0.in");
        String output = "";
        int testCase = 0;
        for (int i = 0; i < inputList.size(); i++) {
            String input = inputList.get(i);
            if (i == 0) {
                testCase = Integer.parseInt(input);
            } else {
                int recycledNo=findRecycledNO(input);
                output = output + "Case #" + i + ": "+recycledNo;
                if (i != (inputList.size() - 1)) {
                    output = output + '\n';
                }
            }
        }
        writeFile(output);
    }

    public int findRecycledNO(String input) {
        String spliInput[] = input.split("\\s");
        int A = Integer.parseInt(spliInput[0]);
        int B = Integer.parseInt(spliInput[1]);
        int n = 0;
        int m = 0;
        int resultCount = 0;
        String[] ab = new String[(B - A) + 1];
        for (int i = 0; i < ab.length; i++) {
            ab[i] = "" + (A + i);
        }
        for (String t : ab) {
            n = Integer.parseInt(t);
            for (int i = 0; i < t.length() - 1; i++) {
                t = t.substring(t.length() - 1) + t.substring(0, t.length() - 1);
                m = Integer.parseInt(t);
                if ((A <= n) && (n < m) && (m <= B)) {
                    //    System.out.println(A + " < " + n + " < " + m + " < " + B);
                    resultCount++;
                }

            }
            //  System.out.println(t);
        }

        return resultCount;
    }

    private ArrayList<String> readFile(String fileName) {

        BufferedReader br = null;
        ArrayList<String> inputList = null;
        try {
            File file = new File(fileName);
            br = new BufferedReader(new FileReader(file));
            String message = null;
            inputList = new ArrayList<String>();
            while ((message = br.readLine()) != null) {
                inputList.add(message);
            }
        } catch (IOException ex) {
            ex.printStackTrace();
        } finally {
            try {
                br.close();
            } catch (IOException ex) {
                ex.printStackTrace();
            }
            return inputList;
        }
    }

    private void writeFile(String message) {
        BufferedWriter bw = null;
        try {
            File file = new File("Output.txt");
            bw = new BufferedWriter(new FileWriter(file));
            bw.write(message);
        } catch (IOException ex) {
            ex.printStackTrace();
        } finally {
            try {
                bw.close();
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
    }

    public static void main(String[] args) {
        RecycledNumbers rn = new RecycledNumbers();
        rn.process();
    }
}
