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 Recycler{

	//Vector<int> possibilities = new Vector<int>(0,0);
	private static int[] slider;
	private static String numString;
	private static int rotCounter;
	private static int pairCount;
	private static String elements, toPrint;
	private static int testNum;
	private static Stack stack = new Stack();
	
	
	
	public static void main(String args[]){
		int testCounter = 1;
		System.out.println("working .....");
		try{
		BufferedReader bf = new BufferedReader(new FileReader(args[0]));
		PrintWriter pw = new PrintWriter(new BufferedWriter(new FileWriter("output.out")), true);
		testNum = Integer.parseInt(bf.readLine());
		while((elements=bf.readLine()) != null){
		pairCount = 0;
		int end = Integer.parseInt(elements.split(" ")[1]);
		int start = Integer.parseInt(elements.split(" ")[0]);
		
		START : for (int i = start; i<=end;i++){
			if(Integer.toString(i).length() < 2) continue;
			for(int j=i+1; j<=end; j++){
				stackDigits(j);
				if(stack.search(i%10) == -1){
					stack = new Stack();
					continue;
				}else{
					//System.out.println(i+" "+j+" - "+stack.search(i%10));
					stack = new Stack();
				}
				
				for(int a : rotations(j)){
					if(a == i) pairCount++; //System.out.println("We've got a pair heuston "+i+" "+j);
					}
				
			}
		}
		toPrint = "Case #"+testCounter+": "+pairCount;
		pw.println(toPrint);
		testCounter++;
		}
		}catch(Exception e){
			e.printStackTrace();
		}
		System.out.println("Done!");
	}
	
	private static void stackDigits(int num){
		if(num/10 > 0) stackDigits(num/10);
		stack.push(num%10);
	}
	private static int[] rotations(int num){
		//possibilities.clear();
		numString = Integer.toString(num);
		rotCounter = 0;
		slider = new int[numString.length()];
		
		numString = numString.charAt(numString.length()-1)+numString.substring(0, numString.length()-1);
		slider[rotCounter] = Integer.parseInt(numString);
		
		while(num != slider[rotCounter]){
			rotCounter++;
			numString = numString.charAt(numString.length()-1)+numString.substring(0, numString.length()-1);
			slider[rotCounter] = Integer.parseInt(numString);
		}
		
		return slider;
	}

}