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.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;


public class ProblemC {
	public static void main (String[] args) throws Exception{
		BufferedReader fin = new BufferedReader(new FileReader("E:/C-small-attempt0.in"));
		String line = fin.readLine();
		BufferedWriter out = new BufferedWriter(new FileWriter("E:/C-small-attempt0.out"));
		int ln = 1;
		while ((line = fin.readLine()) != null && line.length() != 0){
			
			line = line.trim();
			String[] parts = line.split("\\s+");
			int a = Integer.parseInt(parts[0]);
			int b = Integer.parseInt(parts[1]);
			int count = 0;
			for (int i = a; i < b; i++){
				String s = Integer.toString(i);
				ArrayList<Integer> list = new ArrayList<Integer>();
				for (int j = 1; j < s.length(); j++){
					String newString = s.substring(j) + s.substring(0,j);
					int newInt = Integer.parseInt(newString);
					if ((newInt > i) && (newInt <= b) && (list.contains(newInt) == false)){
						list.add(newInt);
						count++;
					}
				}
			}
			out.write("Case #" + ln + ": " + count);
			out.write("\n");
			ln++;
		}
		fin.close();
		out.close();
	}
}