import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;


public class QuestionA extends Question{

	private static Map<Character, Character> translationMap;
	private static boolean isInit;
	private StringBuilder sb;
	
	public QuestionA(Result result, Counter counter)
	{
		super(result, counter);
		if (!isInit) {
			init();
			isInit=true;
		}
	}
	
	private void init() {
		translationMap = new HashMap<Character, Character>();
		String text = "zyeq"+"ejp mysljylc kd kxveddknmc re jsicpdrysi"+"rbcpc ypc rtcsra dkh wyfrepkym veddknkmkrkcd"+"de kr kd eoya kw aej tysr re ujdr lkgc jv";
		String translation = "qaoz"+"our language is impossible to understand"+"there are twenty six factorial possibilities"+"so it is okay if you want to just give up";
		for (int i = 0; i < text.length(); i++) {
			if (!translationMap.containsKey(text.charAt(i)))
				translationMap.put(text.charAt(i), translation.charAt(i));
		}
	}

	@Override
	public void readInput(Scanner scanner) {
		sb = new StringBuilder();
		sb.append(scanner.nextLine());
	}
	
	@Override
	public String solution() {
		for (int i = 0; i < sb.length(); i++) {
			sb.setCharAt(i, translationMap.get(sb.charAt(i)));
		}
		return sb.toString();
	}


}
