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.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;

public class RecycledNumbers {
	
	public static void main(String [] args){
		String fileIn = "C:\\CodeJam\\C-small-attempt0.in";
		ArrayList<String> lines = getLines(fileIn);
		StringBuffer result = new StringBuffer();
		if(lines!=null){			
			String firstLine[] = lines.get(0).split(" ");
			int caseTotal = Integer.parseInt(firstLine[0]);
			for(int i = 0; i<caseTotal; i++){
				String[] line = lines.get(i+1).split(" ");
				result.append("Case #"+(i+1)+": "+ getResult(line)+"\n");
			}
		}
			
		String fileOut = "C:\\CodeJam\\C-small-attempt0.out";
		writeFile(fileOut, result.toString());	
	}
	
	public static int getResult(String[] line){
		String str = line[0];
		int line0 = Integer.parseInt(line[0]);
		int line1 = Integer.parseInt(line[1]);
		int tot = 0;
		HashMap<Object, Object> map = new HashMap<Object, Object>();
		for(int i=line0;i<=line1;i++){
			for(int j=1; j<str.length();j++){
				String strAll = i+"";
				String str1 = strAll.substring(j);
				String str2 = strAll.substring(0,j);
				int strResult = Integer.parseInt(str1+str2);
				if(line0<=strResult && strResult<=line1){
					if(map.get(strAll+","+strResult)==null && !strAll.equalsIgnoreCase(strResult+"")){
						map.put(strAll+","+strResult,"Exist");
						map.put(strResult+","+strAll,"Exist");
						tot++;
					}
				}
			}  
		}
		return tot;
	}
	
	public static void writeFile(String filePath, String content){
		try{
			PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(filePath)));
			out.write(content);
			out.close();
		}
		catch(IOException e){
			e.printStackTrace();
		}
	}
	
	public static ArrayList<String> getLines(String filePath){
		ArrayList<String> lines = null;	
		try{
			lines = new ArrayList<String>();
			String str;	    	   
		    BufferedReader in = new BufferedReader( new FileReader(filePath));
		    while ((str = in.readLine()) != null) {
		    	lines.add(str);	      
		    }	    
		    in.close();
		}catch(IOException e){
			e.printStackTrace();
		}
		return lines;
	}
}