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.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.util.Scanner;


public class RecycledNumbers {
	
	public static void main(String[] args) {
		RecycledNumbers rec = new RecycledNumbers();
		File file  = new File("C:\\Users\\aadi\\Desktop\\RecycledNumbers\\C-small-attempt0.in");
		
		Numbers[] numbers = new Numbers[2000001];
		for(int i =1 ;i<2000001 ;i++){
			int length = (int) (Math.log10(i)+1);
			numbers[i] = new Numbers(i, length);
			int temp = i;
			for(int j =0 ;j<length-1; j++){
				temp = numbers[i].circularPermutes(temp, length);
				if(numbers[i].isUnique(i)){
					numbers[i].arr[(numbers[i].count)]=temp;
					numbers[i].count++;
				}
			}
		}
		try{
			FileWriter fstream = new FileWriter("C:\\Users\\aadi\\Desktop\\RecycledNumbers\\out.txt");
			BufferedWriter out = new BufferedWriter(fstream);
			Scanner scanner = new Scanner(file);
			int numOfCases = Integer.parseInt(scanner.nextLine());
			for(int i = 0; i<numOfCases ;i++){
				int pairs = 0;
				String line = scanner.nextLine();
				Scanner scanner2 = new Scanner(line);
				scanner2.useDelimiter(" ");
				String s = scanner2.next();
				int length =s.length();
				int min = Integer.parseInt(s);
				int max = scanner2.nextInt();
				System.out.println("max"+max);
				for(int j = min ; j<=max ; j++){
					for(int k =0 ;k<numbers[j].count ;k++){
						if(numbers[j].arr[k]<=max && numbers[j].arr[k]>j){
							pairs++;
						}
					}
				}
				out.write("Case #"+(i+1)+": ");
				out.write(""+pairs);
				out.write(System.getProperty("line.separator"));
				System.out.println(pairs);
				System.out.println("");
			}
			out.close();
		}catch(FileNotFoundException f){
			f.getStackTrace();
		}catch(Exception e){
			e.getStackTrace();
		}
	}	
}

class Numbers{
	int num;
	int length;
	int count;
	int[] arr = new int[6];
	
	public Numbers(int number, int length){
		this.length =length;
		this.num = number;
	}
	
	public int circularPermutes(int number,int length){
		int divider = (int) Math.pow(10,length-1);
		int temp = (number%divider)*10+number/divider;
		return temp;
	}
	
	public boolean isUnique(int number){
		for(int i =0; i<count ;i++){
			if(arr[i]==number){
				return false;
			}
		}
		return true;
	}
}
