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.File;
import java.util.ArrayList;
import java.util.Formatter;
import java.util.List;
import java.util.Scanner;

public class recycled {
	
	static int A;
	static int B;
	static int count=0;
	static int n;
	
	private static Scanner x;
	private static Formatter y;
	static String newline = System.getProperty("line.separator");
	
	static List<String> words = new ArrayList<String>();	
	static int testCases;
	
	public static void main(String args[]){
		
		// open input file
		
		 try{
			  x= new Scanner(new File("C-small-attempt0.in"));
			 				
				
		  }catch(Exception e){
			  System.out.println("Could not find the file");
		  }		  

		
		
		while(x.hasNext()){
			words.add(x.nextLine());			
		}
		testCases=Integer.parseInt(words.get(0));
		words.remove(0);
		
		
		int cnt=0;
		
		// create output file
		
		try{
			y= new Formatter("recycled.ou");
			//System.out.println("sampleTongue.ou has been created");
		
		}catch(Exception e){
			System.out.println("Could not create a file");
		}
		
		//evaluate		
		
		for(int k=0; k<testCases;k++){
			
			String[] pStr = (words.get(k)).split(" ");
			
			A=Integer.parseInt(pStr[0]);
			B=Integer.parseInt(pStr[1]);
			
			System.out.println("A :"+ A);
			System.out.println("B :"+ B);
			
				for(int i=A; i<=B; i++){
					
					n=i;
					String sNum=Integer.toString(i);
					cnt=shift(sNum.toCharArray());
					
					//System.out.println("////////////////////");
				}
			System.out.println("count :"+ cnt);
			
			y.format("Case #%d: ",(k+1));
			y.format("%d",cnt);
			y.format(newline);
			
			cnt=0;
			count=0;
		}
		
		
		x.close();
		y.close();
			
	}
	
	public static int shift(char[] c){
		
		
		char []d= new char[c.length];
		
		//shifting 
		for(int k=0; k<c.length; k++){
			
			for(int i=0; i<c.length ;i++){
				
				if(i==0)
					d[i]=c[c.length-1];
				else
					d[i]=c[i-1];
				
				//System.out.print(d[i]);
				
				
			}
			
			int m = Integer.parseInt(new String(c));
			
			
			if(A<=n && m>n && m<=B){
				count++;
				System.out.println(n+"  "+m);
			}
			//copying
			
			for(int j=0; j<c.length; j++){
				c[j]=d[j];
			}
			
		}
		
		return count;
	}
	
	
	
	
	
	
}
