package qual;

import java.util.Scanner;

public class RecycledNumbers {

	public static void main(String[] args) {
		new RecycledNumbers().run();

	}

	private void run() {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		for (int t = 0; t < T; t++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int result = solve(A, B);
			System.out.printf("Case #%d: %d\n", t + 1, result);
		}
	}

	public int solve(int A, int B) {
		int result = 0;
		for (int i = A; i <= B; i++) {
			int dig = (int) Math.log10(A/*same as B*/) + 1;
			int aa = i;
			for (int d = 0; d < dig - 1; d++) {
				aa = (aa % 10) * (int)Math.pow(10, dig - 1) + (aa / 10);
				if (i == aa) {
					break;
				}
				if (i < aa && aa <= B) {
//					System.out.printf("(%d, %d) ", i, aa);
					result++;
				}
			}
		}
		return result;
	}

}


   import java.io.*;
   import java.util.*;
   
    public class ProblemB {
   
       public static void main(String[] args) throws Exception {
      
         String filename = "C-small-attempt0.in";
         Scanner sc = new Scanner(new File(filename) );
      
         System.setOut(new PrintStream(new FileOutputStream("BSolution.txt")));
         int cases = Integer.parseInt(sc.next());
         sc.nextLine();
         
         for(int l = 1; l <= cases; l++) {
          	  
            int A = sc.nextInt();
            int B = sc.nextInt();
            
            int counter = 0;	
            
            for(int m = B; m > A; m--) {
            
               for(int n = A; n < m; n++) {
               
                  if(isRecycled(n,m))
                     counter++;
               }
            }
         	
            System.out.print("Case #" + l + ": " + counter);
            System.out.println();
         }
      }
       public static boolean isRecycled(int n, int m) {
      
         String str = Integer.toString(n);
      	
         if(Integer.toString(n).length() != Integer.toString(m).length()) 
            return false;
         else {
            for(int k = 1; k < str.length(); k++) {
               String temp = "";
                  
               temp = str.substring(str.length() - k, str.length()) + str.substring(0, str.length() - k);
                 
               if(m == Integer.parseInt(temp))
                  return true;
               
            } 
         }
         return false;
      }
   }