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.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Map;
import java.util.StringTokenizer;
import java.util.TreeMap;


public class Recycle {
	
	public static String recycle(int a, int b) {
		int result = 0;
		int digit, temp, cnt;
		String str;
		int array[] = new int[b + 1];
		
		for (int i = 0; i < b; i++){
			array[i] = 0;
		}
		
		str = a+"";
		digit = str.length();
		for (int i = a; i < b; i++){
			if (array[i] == 1)
				continue;
			array[i] = 1;
			temp = i;
			cnt = 0;
			for (int j = 0; j < digit - 1; j++){
				temp = (temp / 10) + (temp % 10)*(int)Math.pow(10, digit - 1);
				if (temp == i)
					break;
				if (a <= temp && temp <= b){
					if(array[temp] == 0){
						cnt++;
						array[temp] = 1;
						//System.out.println(String.format("(%d, %d)", i, temp));
					}
				}
			}
			result += factorial(cnt);
		}
		return "" + result;
	}
	
	public static int factorial(int a){
		if (a <= 0)
			return 0;
		return a + factorial(a - 1); 
	}
	
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int T = 0;
		String str = "";
		
		File input = new File(args[0]);
		FileReader fileReader;
		BufferedReader br;
		
		File output = new File("output_recycle.txt");
		BufferedWriter bw;

		StringTokenizer tokenizer;
		
		try {
			bw = new BufferedWriter(new FileWriter(output));
			
			fileReader = new FileReader(input);
			br = new BufferedReader(fileReader);
			str = br.readLine();
			
			T = Integer.parseInt(str);
			
			for (int i = 0; i < T; i++) {
				int a;
				int b;
				str = br.readLine();
				tokenizer = new StringTokenizer(str);
				a = Integer.parseInt(tokenizer.nextToken());
				b = Integer.parseInt(tokenizer.nextToken());
				bw.write(String.format("Case #%d: %s\n", i+1, recycle(a, b)));
			}
			
			br.close();
			fileReader.close();
			
			bw.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}

}
