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.Scanner;


public class C {
	String cycle(String s) {
		return s.substring(1) + s.charAt(0);
	}

	void run() {
		Scanner in = new Scanner(System.in);
		int T = in.nextInt();
		for (int t=1; t<=T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();
			long res = 0;
			for (long i=A; i<=B; i++) {
				long cnt = 1;
				String str = String.valueOf(i);
				for (String nowstr = cycle(new String(str));
						!nowstr.equals(str); nowstr = cycle(nowstr)) {
					if (nowstr.charAt(0) != 0) {
						int nowint = Integer.parseInt(nowstr);
						if (nowint >= A && nowint <= B) {
							if (nowint < i) {
								cnt = 0;
								break;
							} else {
								cnt++;
							}
						}
					}
				}
				res += cnt*(cnt-1)/2;
			}
			System.out.println("Case #" + t + ": " + res);
		}
	}

	static public void main(String[] args) {
		C obj = new C();
		obj.run();
	}
}
