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.*;
import java.util.*;
import java.util.regex.*;

public class jam03 {

	/**
	 * @param args
	 */
	
	public static void main1(){
	// scalar product problem
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		int number_test;
		Scanner sc = new Scanner(System.in);
		number_test = sc.nextInt();
		for(int j=1;j<=number_test;j++) {
			int lowerLimit = sc.nextInt();
			int upperLimit = sc.nextInt();
			System.out.print("Case #" + j + ": ");
			action(lowerLimit,upperLimit);
//			System.out.println(sum);
		}
	}


	private static void action(int lowerLimit, int upperLimit ) {
		// TODO Auto-generated method stub
		// Iterating over the elements in the set
		int finalGuys = 0;
		int maxZeroes = 0;
		int oldNum=0;
//		System.out.println("lower"+ lowerLimit);
//		System.out.println("uper"+upperLimit);
		for(int i=lowerLimit;i<upperLimit;i++)
		{			
			for(int k=7;k>=1;k--)
			{//3422
				int temp = (int) (i/Math.pow(10, k));//34
				if(maxZeroes ==0 && temp > 0)
				{
					maxZeroes = k;
					//System.out.println("maxZeroes"+maxZeroes);
				}
				if(maxZeroes>0)
				{
					int temp1 = (int) (i - (temp*Math.pow(10, k)));//3422-3400
					int newNum = (int) ((temp1*Math.pow(10, maxZeroes-k+1))+temp);//4223
					if(newNum <= upperLimit && newNum > i && newNum != oldNum)
					{
						oldNum = newNum;
						finalGuys++;
					}
				}
			}
		}
		System.out.println(finalGuys);
			
	}
}
