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.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;

import java.util.List;
import java.util.ArrayList;


public class Rec{
    static int rotate(int n, int l){
        int pot = (int)Math.pow(10,l-1);
        int ld = (int)Math.floor(n/pot);
        int cd = n-ld*pot;
        int ans = cd*10+ld;
        return ans;
    }
    
    static String bw(String a, int n){
        String ans = "";
        for(int i=n;i<a.length();i++)
            ans = ans + a.charAt(i);
        String ans2="";
        for(int i=0;i<a.length()-ans.length();i++)
            ans2 = ans2+a.charAt(i);
            
        System.out.println(a+"->"+ans+ans2);
        return ans+ans2;
    }

    public static int recnum(int a, int b){
        int[] test = new int[b-a+1];
        int ans = 0;
        int l=String.valueOf(a).length();

        for(int i=a;i<=b;i++){
            int c = i;
            List<Integer> reps = new ArrayList<Integer>();
            for(int j=1;j<l;j++){
                c=rotate(c,l);
                if(c<=b && c>i && String.valueOf(c).length()==l && c!=i && !reps.contains(c)){
                    ans++;
                    reps.add(c);
                    //System.out.println("("+String.valueOf(i)+","+String.valueOf(c)+")"); 
                }
            }
        }
        
        return ans;
    }

    public static void main(String[] args) throws IOException{
      BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
      String ttt = "";
      int n = Integer.parseInt(stdin.readLine());
      int i = 1;

      while (i<=n){
        ttt = stdin.readLine();
        String[] AB = ttt.split(" ");
        int a = Integer.parseInt(AB[0]);
        int b = Integer.parseInt(AB[1]);        
        System.out.println("Case #"+String.valueOf(i++)+": "+String.valueOf(recnum(a,b)));
      }

      stdin.close();

    }
}

