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

public class template {

    private StringBuilder result = new StringBuilder();
    
    public static void main(String[] args) {
        new template().go();
    }

    public void go() {

        File inputFile = new File("/Users/amornchaikanokpullwad/Documents/input.in");
        BufferedReader br = null;

        try {
            br = new BufferedReader(new FileReader(inputFile));
            int numTests = Integer.parseInt(br.readLine());
            
            for (int testCounter = 0; testCounter < numTests; ++testCounter) {
                int count = 0;
                String text[] = br.readLine().split(" ");
                long A = Long.parseLong(text[0]);
                long B = Long.parseLong(text[1]);
                for (long i = A; i <= B; i++) {
                    for (int j = 1; j < Long.toString(i).length(); j++) {
                        //System.out.println(j + " " + i);
                        long temp = reverse(Long.toString(i),j);
                        if (temp <= i) continue;
                        if (temp <= B) {
                            System.out.println(i+"+"+B);
                            count++;
                        }
                    }
                    
                    
                    //System.out.println(i+"+"+B);
                    
                    
                    
                }
                appendResult(testCounter, count);
            }
        } catch (FileNotFoundException fe) {
            fe.printStackTrace();
        } catch (IOException ie) {
            ie.printStackTrace();
        } finally {
            try {
                if (br != null) {
                    br.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
        writeResultToFile();
        System.out.println(result);
    }

    private void appendResult(int testCase, int outp) {

        result.append("Case #" + (testCase+1) + ": ");
        result.append(outp+"");

        result.append("\n");
    }

    private void writeResultToFile() {
        PrintWriter pr = null;

        try {
            pr = new PrintWriter(new File("/Users/amornchaikanokpullwad/Documents/output.in"));
            pr.print(result);

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } finally {
            if (pr != null) {
                pr.close();
            }
        }
    }
    
    private long reverse(String in,int le){
       
        StringBuilder temp = new StringBuilder();
        for (int i = le; i > 0; i--) {
            //System.out.println(in);
            temp.append(in.charAt(in.length()-i));
            
        }
        for (int i = 0; i < in.length()-le; i++) {
            temp.append(in.charAt(i));
        }
        return Long.parseLong(temp.toString());
    }
}