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.IOException;
import java.io.OutputStreamWriter;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Formatter;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;


public class Recycled {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Path path = Paths.get(args[0]);
		Path file = Paths.get("recycled.txt");
		int numberOfCases;
		try (Scanner scanner = new Scanner(Files.newInputStream(path), "UTF-8");
				OutputStreamWriter output = new OutputStreamWriter(Files.newOutputStream(file), "UTF-8")) {
			Formatter f = new Formatter(output);
			numberOfCases = scanner.nextInt();
			for (int i = 1; i <= numberOfCases; i++) {
				int from = scanner.nextInt();
				int to = scanner.nextInt();
				int result = solve(from, to);
				f.format("Case #%d: %d\n", i, result);
			}
			f.close();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	private static int solve(int from, int to) {
		Set<Pair> pairs = new HashSet<>();
		for (int a = from; a < to; a++) {
			String n = Integer.toString(a);
			StringBuilder b;
			for (int i = 1; i < n.length(); i++) {
				b = new StringBuilder(n.substring(n.length()-i));
				b.append(n.substring(0, n.length()-i));
				String rec = b.toString();
				if (rec.charAt(0) != '0') {
					int rev = Integer.parseInt(rec);
					if (rev > a && rev <= to) {
						pairs.add(new Pair(a, rev));
					}
				}
			}
		}
		return pairs.size();
	}

	private static class Pair {
		int first;
		int second;
		
		public Pair(int first, int second) {
			super();
			this.first = first;
			this.second = second;
		}

		@Override
		public int hashCode() {
			final int prime = 31;
			int result = 1;
			result = prime * result + first;
			result = prime * result + second;
			return result;
		}

		@Override
		public boolean equals(Object obj) {
			if (this == obj)
				return true;
			if (obj == null)
				return false;
			if (getClass() != obj.getClass())
				return false;
			Pair other = (Pair) obj;
			if (first != other.first)
				return false;
			if (second != other.second)
				return false;
			return true;
		}
	}
}
