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.awt.datatransfer.*;
import java.awt.Toolkit;
public class Repeat
{
    private static String inp;
    public Repeat()
    {
        
    }

    public static void main(String[] args)
    {
        Transferable temp = (Toolkit.getDefaultToolkit().getSystemClipboard().getContents(null));
        try {
            inp = (String) temp.getTransferData(DataFlavor.stringFlavor);
        }
        catch (Exception e)
        {
            System.out.println(e);
        }
        System.out.println(inp);
        
        System.out.println("Breakdown >" + inp.substring(inp.indexOf("\n")));
        //int iterations = Integer.parseInt(inp.substring(inp.indexOf("\n")));
        String[] newlineSplit = inp.split("\n");
        int iterations = Integer.parseInt(newlineSplit[0]);
        System.out.println(iterations);
        System.out.println("Solutions:\n\n\n\n");
        //String cases = inp.substring(inp.indexOf("\n"));
        for(int i = 1; i < newlineSplit.length;i++)
        {
            String[] nums = newlineSplit[i].split(" ");
            
           getCount(Integer.parseInt(nums[0]) ,Integer.parseInt(nums[1]), i);
        }
    }
    
    public static void getCount(int a, int b, int caseNum)
    {
        int count = 0;
        while(a <= b)
        {
            String sA = "" + a;
            String sB = "" + b;
            //System.out.println(sA + "   " + sB);
            for(int i = 0; i < sA.length();i++)
            {
                String temp = sA.substring(sA.length() - i-1) + sA.substring(0,sA.length() - i - 1);
                int iT = Integer.parseInt(temp);
                int iA = Integer.parseInt(sA);
                
                //System.out.println(">>[" + temp + "]    " + (iT - iA) );
                if(iT - iA > 0 && iT <= b)
                {
                    count++;
                    //System.out.println(">>>>>>> " + sA + " " + temp + "    " + (iT - iA));
                } 
                //else
                    //System.out.println(">>[" + temp + "]    " + (iT - iA) );
            }
            a++;
        }
        System.out.println("Case #" + caseNum + ": " + count);
        
    }
}
