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.*;

public class recycled_numbers {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		
		int T = scanner.nextInt();
		int[] answers = new int[T];
		
		for (int c = 0; c < T; c++) {
			int A = scanner.nextInt();
			int B = scanner.nextInt();
			
			int numdigits;
			for (numdigits = 1; A-Math.pow(10,numdigits) >= 0; numdigits++);			
			
			HashSet<Integer> done = new HashSet<Integer>();
			
			int n = A;
			int possiblem;
			answers[c] = 0;
			while (n <= B) {
				possiblem = n;
				int possiblemsthisround = 0;
				for (int i = 0; i <= numdigits; i++) {
					if ((possiblem%10) != 0) {
						possiblem = (possiblem%10)*((int)Math.pow(10,numdigits-1)) + (possiblem-(possiblem%10))/10;
						if ((possiblem <= B) && (possiblem > n)) {
							if (done.contains(possiblem) == false) {
								done.add(possiblem);
								possiblemsthisround++;
							}
							done.add(possiblem);
						}
					}
					else possiblem = (possiblem%10)*((int)Math.pow(10,numdigits-1)) + (possiblem-(possiblem%10))/10;
				}
				if (possiblemsthisround > 0) answers[c] += possiblemsthisround*(possiblemsthisround + 1)/2;
				n++;
			}
		}
		for (int i = 0; i < T; i++) {
			int j = i+1; 
			System.out.println("Case #"+j+": "+answers[i]);
		}
	
	}
}
