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.io.*;

public class Recycle {
	public void cal(String filename) throws NumberFormatException, IOException
	{
		BufferedReader in = new BufferedReader(new FileReader(filename));
		PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("bar.txt")));
		int count = 1;
		String s = in.readLine();
		int all = Integer.parseInt(s);
		while((s = in.readLine()) != null)
		{
			int result = 0;
			if(count > all)
			{
				System.out.println("error");
				break;
			}
			String[] elements = s.split(" ");
			int start = Integer.parseInt(elements[0]);
			int end = Integer.parseInt(elements[1]);
			for(int i = start; i < end; i++)
			{
				for(int j = i + 1; j <= end; j++)
				{
					if(isRecycle(i,j))
					{
						result = result + 1;
					}
				}
			}
			out.println("Case #" + count +": " + result);
			count = count + 1;
		}
		out.close();
	}
	
	public Boolean isRecycle(Integer a, Integer b)
	{
		String a_string = a.toString();
		String b_string = b.toString();
		if(a_string.length() != b_string.length())
			return false;
		for(int i = 1; i < a_string.length(); i++)
		{
			String temp = a_string.substring(i, a_string.length());
			temp = temp.concat(a_string.substring(0, i));
			if(temp.equals(b_string))
				return true;
		}
		return false;			
	}
	
	public static void main(String[] args) throws NumberFormatException, IOException
	{
		Recycle r = new Recycle();
		r.cal("C-small-attempt0.in");
	}

}
