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.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;


public class recy {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int stat[] = new int [2000001];
		
		StringBuffer output = new StringBuffer();
		 
		try{
			  FileInputStream fstream = new FileInputStream("/Users/iToR/Documents/workspace/CodeJam3/src/C-small-attempt4.in");
			
			  DataInputStream in = new DataInputStream(fstream);
			  BufferedReader br = new BufferedReader(new InputStreamReader(in));
			  String strLine;
			
			 
			  strLine = br.readLine();
			  int line = (new Integer(strLine)).intValue();
			  
			  int i = 1;
			  
			  
			  
			  
			  while ((strLine = br.readLine()) != null)   {
				 
				  //each case
				  
				 
				  	
					output.append("Case #"+i+": ");
						
					String[] temp;
						 
					/* delimiter */
					String delimiter = " ";
					/* given string will be split by the argument delimiter provided. */
			
					temp = strLine.split(delimiter);
					
					
					int orimin = (new Integer(temp[0])).intValue();
					int min = (new Integer(temp[0])).intValue();
					int max = (new Integer(temp[1])).intValue();
					int count = 0;
					
						 while(min<=max){
							 
							  //try swap
							  String tempStr = ""+min;
							  String oritempStr = ""+min;
							  int oricheck = (new Integer(oritempStr)).intValue();
							  stat[min] = 1;
							  for(int k = 0;k<oritempStr.length()-1;k++){
								  //System.out.println("before:"+ tempStr+"x"+tempStr.length());
								  char first = tempStr.charAt(0);
								  
								  tempStr = tempStr.substring(1,tempStr.length());
								  tempStr+= first;
								  
								  int check = (new Integer(tempStr)).intValue();
								  
								  //System.out.println("after:"+ tempStr+"x"+tempStr.length());
								  if(tempStr.charAt(0)=='0'){
									  
								  }
								  else if(check>0&&check<=max&&check>=orimin){
									  if(check>oricheck){
										  count++;
										 System.out.println(oritempStr+","+check);
									  }
								  }
								  
							  	}
							  
							  min++;							  
						  }
						 
						 
						
						output.append(count);
						if(i<line){
							output.append("\n");
							
						}			
						i++;
			  
			  
			  }
			  //Close the input stream
			  in.close();
			    }catch (Exception e){//Catch exception if any
			  System.err.println("Error1: " + e.getMessage());
			  }
		//write output
		 	try{
			
			  FileWriter fstream = new FileWriter("result.txt");
			  BufferedWriter out = new BufferedWriter(fstream);
			  out.append(output);
			 
			  out.close();
			  }catch (Exception e){
			  System.err.println("Error2: " + e.getMessage());
			  }
	}

}
