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.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.StringTokenizer;
import java.util.Vector;
import java.util.HashMap;

public class Algorithm3 {

	static final String input_path = "F://workspace//GoogleContest2012//src//input.txt";
	static final String output_path = "F://workspace//GoogleContest2012//src//output.txt";
	static int total_case;
	
	static int findMax(String line){
		StringTokenizer token  = new StringTokenizer(line);
		Integer small = Integer.parseInt((String)token.nextElement());
		Integer large  = Integer.parseInt((String)token.nextElement());
		int number = 0;
		HashMap map = new HashMap();
		for(Integer i=small;i<large;i++){
			String str = i.toString();
			int length = str.length();
			map.clear();
			for(int k = 1;k<length;k++){
				//System.out.print(str.subSequence(length - k, length).toString()+","+str.subSequence(0, length - k).toString()+",");
				String temp = str.subSequence(length - k, length).toString()+str.subSequence(0, length - k).toString();
				int m = Integer.parseInt(temp);
				if(m<=large&&m>i){
					if(map.get(m)==null){
						number++;
						map.put(m, m);
					}
				}
			}
		}
		
		return number;
	}
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int i = 0;
		Vector<String> outputs = new Vector<String>();
		try{
			File file = new File(input_path);
			BufferedReader reader =new BufferedReader(new FileReader(file));
			String line  = reader.readLine(); //skip number
			total_case = Integer.parseInt(line);
			while(i<total_case)
			{
				line = reader.readLine();
				
				Integer max = findMax(line);
				String decoded = "Case #"+(i+1)+": "+max;
				System.out.println(decoded);
				outputs.add(decoded);
				i++;
			}
			File file_o = new File(output_path);
			BufferedWriter writer =new BufferedWriter(new FileWriter(file_o));
			for(i=0;i<outputs.size();i++)
			{
				writer.write(outputs.get(i)+"\r\n");
			}
			writer.flush();
			reader.close();
			writer.close();
		}catch(Exception e){
			System.out.println(e.toString());
		}
	}

}
