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();
	}

}
/**
 * KSpokas: GCJ 2012 Qualification Round Problem C - Recycled Numbers
 */

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.util.HashSet;
import java.util.Set;


public class qualProblemC {
	private final static int EXPECTED_ARG_COUNT = 1;
	
	public static void main(String[] args) {
		if (args.length != EXPECTED_ARG_COUNT) {
			System.err.println("Error: expecting " + EXPECTED_ARG_COUNT);
			return;
		}
		
		String fileName = args[0];
		try {
		    FileInputStream fstream = new FileInputStream(fileName);
		    DataInputStream in = new DataInputStream(fstream);
		    BufferedReader br = new BufferedReader(new InputStreamReader(in));
		    BufferedWriter out = new BufferedWriter(new FileWriter(fileName + ".out"));
		    
		    Integer testCaseCount = Integer.parseInt(br.readLine());
		    
		    for (int i = 0; i < testCaseCount; i++) {
		    	String strLine = br.readLine();
		    	
		    	StringBuilder sb = new StringBuilder("Case #");
		    	sb.append(i + 1).append(": ");
		    	sb.append(calculate(strLine));
		    	out.write(sb.toString());
		    	out.newLine();
		    }
		    in.close();
		    out.close();
	    } catch (Exception e) {
	    	System.err.println("Error: " + e.getMessage());
	    }
	}
	
	private static int calculate(String input) {
		String[] values = input.split(" ");
		Integer min = Integer.parseInt(values[0]);
		Integer max = Integer.parseInt(values[1]);
		
		Set<String> duplicates = new HashSet<String>();
		for (int i = min; i <= max; i++) {
			String num = String.valueOf(i);
			for (int j = 1; j < num.length(); j++) {
				Integer offset = Integer.parseInt(num.substring(j) + num.substring(0, j));
				if (offset != i && offset <= max && offset >= min) {
					duplicates.add(
							(i < offset) 
									? num.toString() + ":" + offset.toString() 
									: offset.toString() + ":" + num.toString());
				}
			}
		}
		
		return duplicates.size();
	}
	
}
