import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.util.*;

class Recycle{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int testcase, A, B;
    testcase = sc.nextInt();
    for(int i=1;i<=testcase;i++){
      A = sc.nextInt();
      B = sc.nextInt();
      System.out.println("Case #"+i+": "+countpair(A,B));
    }
  }
  
  public static int countpair(int A, int B){
    int numdigit, temp = A, temp2, counter;
    int[] remember;
    counter = 0;
    while(A<=B){
      remember = new int[7];
     numdigit = (int)Math.log10((double)A) + 1;
     temp = A;
     for(int i=0;i<numdigit;i++){
       temp2 = temp%10;
       temp/=10;
       temp+=temp2*(int)Math.pow(10,numdigit-1);

       if(check(temp, A, B, remember)){
         counter++;
       }
     }
     A++;
    }
    return counter;
  }
  
  public static boolean check(int checker, int A, int B, int[] remember){
    boolean checked = false;
    boolean alreadyhave = false;
    int i = 0;
      if(checker> A && checker<=B){
        for(i=0;i<remember.length;i++){
          if(remember[i] == checker){
            alreadyhave = true;
            break;
          }
        }
        if(!alreadyhave){
          i=0;
          while(remember[i]!=0)
            i++;
          remember[i] = checker;
          checked = true;
        } 
      }
    return checked;

  }
}
  