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.*;
import java.util.*;

public class recycle{
    static class pair{
        int a,b;
        @Override
        public int hashCode(){ return a^b;}
        @Override
        public boolean equals(Object o){
            pair p = (pair)o;
            return p.a == a && p.b == b;
        }
    }

    public static void main(String args[]) throws Exception{
        Scanner s=  new Scanner(System.in);
        int nu= s.nextInt(); s.nextLine();
        int casen=1;while (nu-->0){
        
            int A = s.nextInt(); int B = s.nextInt(); 
                try{s.nextLine();}catch(Exception e){}
            Set<pair> pairs = new HashSet<pair>();
            long num=0;
            for (int i= A; i <=B;i++){
                int k=i;
                int digits = 0; int mult = 1;
                while (k>0){ digits++; k/=10; mult *= 10; }

                k=i; int sum = 0; 
                int m2 = 1;
                while (k>0){
                    sum += m2*(k%10);
                    boolean zero =k%10 == 0;
                    mult/=10;
                    k/=10;
                    int a = i;
                    int b = sum*mult+k;
                    if (!zero && b >= A && b <= B && a!=b){
                            pair p = new pair();
                            p.a = b; 
                            p.b = i;
                        if(!pairs.contains(p)) {
                            p.a = i; p.b=b;
                            if (!pairs.contains(p)){
                            num++;pairs.add(p);
                         //   System.out.println(p.a + "-"+p.b);
                            }
                        }
                    }
                    m2*=10;
                }
            }
            System.out.println("Case #"+casen++ +": "+ num);
       } 
    }
}
