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.DataInputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Set;

public class GCJ3 {

	
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub

		GCJ3 g = new GCJ3();

		// System.out.println();
		// long i1 = g.calculate(1, 9);
		// System.out.println();
//		 long i2 = g.calculate(10, 40);
		// System.out.println();
//		long i3 = g.calculate(100, 500);
//		long i4 = g.calculate(1111, 2222);
		
//		long i5 = g.calculate(28, 93);
		 
		// System.out.println(i1);
//		 System.out.println(i2);
//		 System.out.println(i3);
//		 System.out.println(i4);
//		System.out.println(i5);

		try {
			// Open the file that is the first
			// command line parameter
			FileInputStream fstream = new FileInputStream(
					"C:/PROG/java/work/tc/src/gcj3.txt");
			// Get the object of DataInputStream
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			String strLine;
			// Read File Line By Line
			int lineNum = 1;
			br.readLine();

			while ((strLine = br.readLine()) != null) {
				// Print the content on the console

//				 System.out.print(strLine+"\t");
				String[] val = strLine.split("\\s");
				System.out.print("Case #" + lineNum + ": ");
				System.out.println(g.calculate(Integer.valueOf(val[0]),
						Integer.valueOf(val[1])));
				
				
				
				
				// System.out.println();

				// System.out.println(strLine.charAt(0));
				lineNum++;
			}
			// Close the input stream
			in.close();
		} catch (Exception e) {// Catch exception if any
			e.printStackTrace();
		}

	}

	public long calculate(int A, int B) {
		
		HashMap<String,HashSet<String>> map = new HashMap<String,HashSet<String>>();

		String a = String.valueOf(A);
		String b = String.valueOf(B);
		if (a.length() == b.length() && a.length() > 1) {
			long count = 0;

			for (long i = A; i <= B; i++) {

				for (long l = 1; l < a.length(); l++) {
					long n = 0;
					long m = i;

					String nS = String.valueOf(m);

					String nS2 = nS.substring((int) l, a.length())
							+ nS.substring(0, (int) l);

					n = Long.valueOf(nS2);

					String nS3 = String.valueOf(n);

					if (n < m && nS3.length() == a.length() && A<=n && m<=B) {
//						System.out.println(n + " " + m);
						count++;
						if (map.get(nS3) == null){
							HashSet<String> s = new HashSet<String>();
							s.add(nS);
							map.put(nS3, s);
						}else {
							map.get(nS3).add(nS);
						}
					}
				}
			}
			
			long count2 = 0;
			for (String s : map.keySet()){
				
				for (Object o: map.get(s).toArray()){
					count2++;
				}
				
			}

			return count2;
		}

		return 0;
	}

}
