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 RecycledNumbers {
	public void doMain() throws Exception {
		Scanner sc = new Scanner(new FileReader("input.in"));
		PrintWriter pw = new PrintWriter(new FileWriter("output.txt"));
		int T = sc.nextInt();
		for (int t=0; t<T; t++) {
			System.out.println("Now case " + (t+1));
			int A = sc.nextInt();
			int B = sc.nextInt();
			boolean[] flag = new boolean[B-A+1];
			for(int f=0; f<B-A; f++){
				flag[f] = false;
			}
			int ans = 0;
			for(int i=A; i<B; i++){
				if(flag[i-A]==false){
					String str = String.valueOf(i);
					String curstr = str;
					int NofR = 0;
					int NofRdN = 0;
					for(int j=0; j<str.length()-1;j++){
						String recycled = recycle(str);
						System.out.println(str + " " + recycled);
						int recycledInt = Integer.parseInt(recycled);
						if(recycledInt>Integer.parseInt(curstr) && recycledInt<=B) {
							System.out.println("found!");
							NofRdN++;
							flag[recycledInt-A] = true;
						}
						str = recycled;
					}
					System.out.println("NofRdN = " + NofRdN);
					ans = ans + ((NofRdN+1) * NofRdN)/2;
				}
			}
			System.out.println("Case #" + (t+1) + ": " + ans);
			pw.print("Case #" + (t+1) + ": " + ans);
			pw.println();
		}
		pw.flush();
		pw.close();
		sc.close();
	}

	public static String recycle(String str){
		String last = str.substring(str.length()-1);
		String substr = str.substring(0,str.length()-1);
		String recycled = last + substr;
		return recycled;
	}


	public static void main(String[] args) throws Exception {
		(new RecycledNumbers()).doMain();
	}
}

