import java.io.BufferedReader;
import java.io.BufferedWriter;
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 GoogleC {
	public String szamol(String input){
		String result="";
		String a=input;
		Integer min=Integer.parseInt(a.substring(0,a.indexOf(' ')));
		a=a.substring(a.indexOf(' ')+1);
		Integer max=Integer.parseInt(a);
		Long count=0l;
		for(Integer i=min; i<=max; i++){
			String e1=i.toString();
			Set<Integer> db=new HashSet<Integer>(); 
			for (int j=1; j<e1.length();j++){
				
				String e2=e1.substring(j)+e1.substring(0,j);
				Integer k=Integer.parseInt(e2);
				if (k>i && k<=max){
					db.add(k);
					//System.out.println(e1+"\t"+e2);
				}
				
			}
			count+=db.size();
		}
		
		return count.toString();
	}
	public static void main(String[] args) {
		GoogleC a=new GoogleC();
		//String filename="input.txt";
		//String filename="C-small-attempt0.in";
		String filename="C-large.in";
		String thisLine;
		try {
			BufferedReader br = new BufferedReader(new FileReader(filename));
			BufferedWriter bw= new BufferedWriter(new FileWriter(filename+".out"));
			thisLine=br.readLine();
			Integer tnum=Integer.parseInt(thisLine);
		     for(int i=0;i<tnum;i++) { // while loop begins here
		    	 	thisLine=br.readLine();
		           System.out.println(thisLine);
		           System.out.println("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		           bw.write("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		         } // end while 
		        // end try
		     br.close();
		     bw.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}


	}

}

import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;

public class ProblemC {
	public static void main(String argv[])
	{
//		IOSystem ioSystem = new IOSystem("problem/A-small-attempt2");
		IOSystem ioSystem = new IOSystem("problem/C-large");
//		IOSystem ioSystem = new IOSystem("problem/test");

		ioSystem.nextLong();
		int count=0;
		while(ioSystem.hasNext())
		{
			System.out.println(count++);

			int A = ioSystem.nextInt();
			int B = ioSystem.nextInt();

			int ret = 0;
			Set<String> set = new HashSet<String>();

			//smallã ãã§ãã¨ãã
			for(int i = A;i<B;i++)
			{
				if(i<10)continue;

				String s = ""+i;
				StringBuffer sb  = new StringBuffer(s);

				for(int j=0;j<sb.length()-1;j++)
				{
					char c = sb.charAt(0);
					sb.deleteCharAt(0);
					sb.append(c);

					if(sb.charAt(0)=='0')continue;

					int pair = Integer.parseInt(sb.toString());
					if(pair <= B && i < pair)
					{
//						System.out.println(s+":"+sb.toString());
						if(set.contains(i+sb.toString()))
						{
//							System.out.println("!!!"+i+":"+sb.toString());
						}
						else
						{
							ret++;
							set.add(i+sb.toString());
						}
					}

				}

			}


			ioSystem.appendAnswer(ret);
		}

		ioSystem.output();
	}
}


