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();
	}

}
package codejam;
import java.io.*;
import java.util.*;

public class RecycledNumbers {

	public static void RecycledNumbersProcess() throws Exception
	{
	
		int t_cases= getT();
		for(int i = 1; i<=t_cases;i++)
		{
				String line = getG();
				long A, B;
				String[] charNUMBERS = line.split(" ");
						
				A = Long.parseLong(charNUMBERS[0]);
				B = Long.parseLong(charNUMBERS[1]);
	
				//Check no of digits
				int NoOfDigits = charNUMBERS[0].length();
				
				HashSet hsUnique = new HashSet();
				hsUnique.clear();
				
				long OutputCount;
				OutputCount = 0;
				
				for(long j=A; j<=B; j++)
				{
				
					long tempA = j;
							
					for(int k = 0; k<NoOfDigits-1; k++)
					{
						long Rem = tempA%10;
						long newA = tempA/10;
						newA = newA + Rem*new Double(Math.pow(10,NoOfDigits-1)).longValue();

						tempA = newA;
						
						//Check for satisfying condition
						if(newA > j && newA >= A && newA <= B)
						{
							OutputCount++;
							
							String jStr = String.valueOf(j);
							String newAStr = String.valueOf(newA);
							
							String pair = jStr + newAStr;

							hsUnique.add(pair);
						}
					}//for loop k
				}//for loop j
			
		
				//System.out.print("Case #" + i + ": " + hsUnique.size()+"\n");
				out.write("Case #" + i + ": " + hsUnique.size()+"\n");
				
				hsUnique = null;

		}
		
	}
	
	public static BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
	public static File input;
	public static FileReader inputreader;
	public static BufferedReader in;
	public static File output;
	public static FileWriter outputwriter;
	public static BufferedWriter out;
	public static StringTokenizer st;
	
	public static void main(String[] args) throws Exception {
		
		input = new File("smallinputRN.in.txt");
		inputreader = new FileReader(input);
		in = new BufferedReader(inputreader);
		output = new File("smalloutputRN.out.txt");
		outputwriter = new FileWriter(output);
		out = new BufferedWriter(outputwriter);
		RecycledNumbersProcess();
		close();
	}
	
	
	public static void close() throws IOException {
		if(in!=null)in.close();
		if(inputreader!=null)inputreader.close();
		if(out!=null)out.flush();
		if(out!=null)out.close();
		if(outputwriter!=null)outputwriter.close();
	}
	
	// ************************** INPUT READING *****************
	static String LINE() throws IOException { return in.readLine();}
	static int getT() throws IOException {return Integer.parseInt(LINE());}
	static String getG() throws IOException {return LINE();}
	
}


