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.ArrayList;
import java.util.StringTokenizer;


public class ProblemC {
	private String line = "";
	private String fileContents = "";
	private String delim = "\r\n";
	private String fileName = "C-small-attempt0.in";
	
	public void solve() {
		StringTokenizer st = new StringTokenizer(fileContents,delim);
		StringTokenizer lineToken = null;
		int count = 1;
		int testCases = 0;
		int lower = 0;
		int	upper = 0;
		int y = 0;
		
		ArrayList<Integer> numbersList = new ArrayList<Integer>();
		
		testCases = Integer.parseInt(st.nextToken());
		
		while(st.hasMoreTokens()) {
			
			line = st.nextToken();
			
			System.out.print("Case #");
			System.out.print(count++);
			System.out.print(": ");
			
			lineToken = new StringTokenizer(line," ");
			
			lower = Integer.parseInt(lineToken.nextToken());
			upper = Integer.parseInt(lineToken.nextToken());

			y = 0;
			int numberLen = 0;
			for(int i=lower; i<upper; i++) {
				String number = String.valueOf(i);
				numberLen = number.length();
				for(int k = 1; k<numberLen; k++) {
					String newNumberBack = number.substring(0, numberLen-k);
					String newNumber = number.substring(numberLen-k);
					newNumber = newNumber + newNumberBack;
					if(!newNumber.startsWith("0") && newNumber.length() == number.length()) {
						Integer testNumber = Integer.parseInt(newNumber);
						if(lower <= i && i < testNumber && testNumber <= upper
//								&& !numbersList.contains(testNumber)
								) {
							numbersList.add(testNumber);
							y++;
							
/*							System.out.print("(");
							System.out.print(i);
							System.out.print(",");
							System.out.print(testNumber);
							System.out.print(")\t");
*/						}
					}
				}
			}
			System.out.println(y);
		}
	}
	
	public void readFile() {
		try {
			// Open the file that is the first
			// command line parameter
			FileInputStream fstream = new FileInputStream(fileName);
			// Get the object of DataInputStream
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			String strLine;
			StringBuilder sb = new StringBuilder();
			// Read File Line By Line
			while ((strLine = br.readLine()) != null) {
				// Print the content on the console
				sb.append(strLine);
				sb.append(delim);
			}
			// Close the input stream
			in.close();
			
			fileContents = sb.toString();
		} catch (Exception e) {// Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
	}

}
