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.IOException;
import java.io.FileReader;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.StringTokenizer;

public class TestJAM
{
	public static void main (String[] args)
	{
/*		String nStr1 = "12";
		int numswindex1 = ;
		String nsw1 = nStr1.substring (numswindex1) + nStr1.substring (0, numswindex1);		
		System.out.println (nStr1.substring (numswindex1));
		System.out.println (nStr1.substring (0, numswindex1));
		System.out.println (nsw1);
		if (1==1) return;
*/		
		BufferedReader br = null;
		PrintStream ps = null;
		
		try
		{
			int a;
			int b; 
			int t;
			int count;
			String nStr;
			String mStr;
			String nsw;
			String line;
			StringTokenizer st;
			
			br = new BufferedReader (new FileReader ("C-small-attempt0.in"));
			ps = new PrintStream (new FileOutputStream ("C-small-attempt0.out"));
						
			line = br.readLine ();
			t = Integer.parseInt (line);
			
			for (int testCase = 0; testCase < t; testCase++)
			{
				count = 0;
				line = br.readLine ();
				st = new StringTokenizer (line);
				a = Integer.parseInt (st.nextToken ());
				b = Integer.parseInt (st.nextToken ());
				
				for (int n = a; n <= b; n++)
				{
					for (int m = n + 1; m <= b; m++)
					{
						nStr = String.valueOf (n);
						mStr = String.valueOf (m);
						
						int nlen = nStr.length ();
						int mlen = mStr.length ();

						if (nlen == mlen)
						{
							for (int numswindex = 0; numswindex < nlen; numswindex++)
							{
								nsw = nStr.substring (numswindex) + nStr.substring (0, numswindex);
								if (nsw.equalsIgnoreCase (mStr))
								{
									count++;
									break;
								}
							}
						}
						else if (nlen > mlen)
						{
							break;
						}
					}
				}
				
				ps.println ("Case #" + (testCase + 1) + ": " + count);

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

//			ps.println ("test1 test1 test1");
			
//			System.out.println ("Hola Mundo!!!");			
		}
		catch (IOException ioe)
		{
			ioe.printStackTrace ();
		}
		catch (NumberFormatException nfe)
		{
			nfe.printStackTrace ();
		}
		finally
		{
			if (ps != null)
			{
				ps.close ();
			}
			if (br != null)
			{
				try
				{
					br.close ();					
				}
				catch (IOException ioe)
				{
					ioe.printStackTrace ();
				}
			}
		}
	}	
}




