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.*;
import java.util.*;

public class C {
	
	BufferedReader br;
	PrintWriter out;
	StringTokenizer st;
	boolean eof;
	
	enum InputType {
		SAMPLE, SMALL, LARGE;
	}
	
	static final InputType currentInputType = InputType.SMALL;
	static final int attemptNumber = 0; // for small inputs only
	
	int pow10;
	
	void solve() throws IOException {
		int a = nextInt();
		int b = nextInt();
		
		pow10 = 1;
		int cnt = Integer.toString(a).length();
		for (int i = 0; i < cnt - 1; i++)
			pow10 *= 10;
		
		long ans = 0;
		
		for (int i = a; i <= b; i++) {
			for (int j = (i % 10) * pow10 + (i / 10); j != i; j = (j % 10) * pow10 + j / 10)
				if (a <= j && j <= b && j > i)
					ans++;
		}
		
		out.println(ans);
	}
	
	void inp() throws IOException {
		switch (currentInputType) {
		case SAMPLE:
			br = new BufferedReader(new InputStreamReader(System.in));
			out = new PrintWriter(System.out);
			break;
		case SMALL:
			String fileName = "C-small-attempt" + attemptNumber;
			br = new BufferedReader(new FileReader(fileName + ".in"));
			out = new PrintWriter(fileName + ".out");
			break;
		case LARGE:
			fileName = "C-large";
			br = new BufferedReader(new FileReader(fileName + ".in"));
			out = new PrintWriter(fileName + ".out");
			break;
		}
		int test = nextInt();
		for (int i = 1; i <= test; i++) {
			System.err.println("Running test " + i);
			out.print("Case #" + i + ": ");
			solve();
		}
		out.close();
	}
	
	public static void main(String[] args) throws IOException {
		new C().inp();
	}
	
	String nextToken() {
		while (st == null || !st.hasMoreTokens()) {
			try {
				st = new StringTokenizer(br.readLine());
			} catch (Exception e) {
				eof = true;
				return null;
			}
		}
		return st.nextToken();
	}
	
	String nextString() {
		try {
			return br.readLine();
		} catch (Exception e) {
			eof = true;
			return null;
		}
	}
	
	int nextInt() throws IOException {
		return Integer.parseInt(nextToken());
	}
	
	long nextLong() throws IOException {
		return Long.parseLong(nextToken());
	}
	
	double nextDouble() throws IOException {
		return Double.parseDouble(nextToken());
	}
}
