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.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;

public class QualificationC {
	public static void main(String[] args) {
		File file = new File("D:/CodeJam/C-small-attempt0.in");
        StringBuffer contents = new StringBuffer();
        BufferedReader reader = null;

        try {
            reader = new BufferedReader(new FileReader(file));
            String text = null;

            int row = 0;
            while ((text = reader.readLine()) != null) {
                if(row == 0)
                	System.out.println(text);
                else{
                	String[] textArr = text.split(" ");
                	int a = Integer.parseInt(textArr[0]);
                	int b = Integer.parseInt(textArr[1]);
                	int half = (a+b)/2;
                	Set<Set<String>> resSet2 = new HashSet<Set<String>>();
                	int res = 0;
                	for(int i=a; i<=b; i++){
                		if(i<10)
                			continue;
                		String numStr = i+"";
                		for(int j=1; j<numStr.length(); j++){
                        	Set<String> resSet1 = new HashSet<String>();
                    		String moved = numStr.substring(j)+numStr.substring(0, j);
                    		if(moved.charAt(0) == '0')
                    			continue;
                    		if(moved.equals(numStr))
                    			continue;
                    		if(Integer.parseInt(moved) < a || Integer.parseInt(moved) > b)
                    			continue;
                    		
                    		resSet1.add(numStr);
                    		resSet1.add(moved);
                    		if(resSet2.contains(resSet1))
                    			continue;
                    		else
                    			resSet2.add(resSet1);
                    		
                    		//res += moved+" ";
                    		res++;
                		}
                	}
                	
                	contents.append("Case #"+row+": "+res).
                		append(System.getProperty("line.separator"));
                }
                row++;
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (reader != null) {
                    reader.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        
        System.out.println(contents.toString());
        
        try{
        	FileWriter fstream = new FileWriter("D:/CodeJam/C-small-attempt0.out");
        	BufferedWriter out = new BufferedWriter(fstream);
        	out.write(contents.toString());
        	out.close();
        }catch (Exception e){
        	System.err.println("Error: " + e.getMessage());
        }
	}

}
