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.IOException;
import java.io.InputStreamReader;


public class C {
	public static void main(String[] args) {
		try {
			int num;
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			String str = null;
			str = br.readLine();
			num = Integer.parseInt(str);
			for (int i = 0; i < num; i++) {
				String s = br.readLine();
				String arr[] = s.split("\\s+");
				int num1 = Integer.parseInt(arr[0]);
				int num2 = Integer.parseInt(arr[1]);
				int count = 0;
				for (int j = num1; j <= num2; j++) {
					String originalStr = "" + j;
					String numStr = originalStr;
					do {
						numStr = numStr.substring(1) + numStr.charAt(0);
						if (numStr.compareTo(originalStr) > 0) {
							if (Integer.parseInt(numStr) <= num2)
							count++;
						}
					} while (!numStr.equals(originalStr));
				}
				System.out.println("Case #" + (i+1) + ": " + count);
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}	