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.io.*;
class ProbC
{
	String calculate(int low,int up)
	{	String ans="";
		int anscount=0;
		int l=low;
		int u=up;
		for(int i=l;i<=u;i++)
		{
				String num=Integer.toString(i);
				for(int j=1;j<num.length();j++)
				{
					String first=num.substring(0,j);
					String second=num.substring(j,num.length());
					String now=second+first;
					//System.out.println(now);
					if(now.charAt(0)=='0')
					{
						
					}
					else
					{
						int comp=Integer.parseInt(now);
						if(comp<=up&&i<comp)
						{
							anscount=anscount+1;
						}
					}
			}
		}
	
				return Integer.toString(anscount);
	}

	public static void main(String args[]) 
	throws IOException 
	{
		ProbC obj=new ProbC();
		
		File ii = new File ("C-large.in");
		FileInputStream fis = new FileInputStream(ii);
		BufferedReader  br = new BufferedReader(new InputStreamReader (fis));
		int cases = Integer.parseInt(br.readLine());
		FileOutputStream fout = new FileOutputStream ("ProbCoutputlarge.txt");
		DataOutputStream dout = new DataOutputStream (fout);
		
		for(int i=0;i<cases;i++)
		{
			String temp1 = br.readLine();
			String parts [] = temp1.split(" ");
			
			int low=Integer.parseInt(parts[0]);
			int up=Integer.parseInt(parts[1]);
			int uc=0,lc=0;
			int temp=low;
			while(temp>0)
			{
				int a=temp%10;
				temp=temp/10;
				uc++;
			}
			temp=low;
			while(temp>0)
			{
				int a=temp%10;
				temp=temp/10;
				lc++;
			}
			if(uc==lc)
			{
				System.out.println("A and B have same number of digits");
				String result=obj.calculate(low,up);
				String finalans="Case #"+(i+1)+":  "+result+System.getProperty("line.separator");
				dout.writeBytes(finalans);
			}
			else
			{
				System.out.println("A and B do not have same number of digits");
			}
		
		}
	}
}