import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int t=sc.nextInt();
		int casos=1, a, b, n, m, cont;
		while(t!=0){
			a=sc.nextInt();
			b=sc.nextInt();
			if(a>b){
				int aux=a;
				a=b;
				b=aux;
			}
			System.out.printf("Case #%d: ",casos++);
			if(a==b){
				System.out.printf("%d\n",0);
			}else{
				cont=0;
				for(n=a;n<b;n++){					
					for(m=n+1;m<=b;m++){					
						if(isRecycled(n,m)) cont++;
					}
				}
				System.out.printf("%d\n",cont);
			}
			t--;
		}		
	}
	public static boolean isRecycled(int n1, int n2){
		String s1, s2, aux;
		s1 =  String.valueOf( n1 );
		s2 =  String.valueOf( n2 );		
		boolean r = false;		
		for(int i=0;i<s1.length();i++){
			aux="";
			aux=s1.substring(i,s1.length())+s1.substring(0,i);
//			System.out.println(aux);
			if(aux.equals(s2)){
				r=true;
				break;
			}
		}		
		return r;
	}
}

import java.io.*;
import java.util.*;

class MyReader{
    private BufferedReader reader = null;
    private StringTokenizer tokenizer = null;
    MyReader(Reader r) throws IOException{
        reader = new BufferedReader(r);
    }
    public int nextInt() throws IOException {
        return Integer.parseInt(nextToken());
    }
    public long nextLong() throws IOException{
        return Long.parseLong(nextToken());
    }
    public double nextDouble() throws IOException{
        return Double.parseDouble(nextToken());
    }
    public String nextLine() throws IOException{
        return reader.readLine();
    }
    public String nextToken() throws IOException {
        while (tokenizer == null || !tokenizer.hasMoreTokens()) {
            tokenizer = new StringTokenizer(reader.readLine());
        }
        return tokenizer.nextToken();
    }
}


public class Temp {
    public static boolean cycled(int n, int m){
        String s = String.valueOf(m);
        for (int i = 0; i < s.length(); ++i){
            String str = s.substring(i) + s.substring(0,i);
            int k = Integer.valueOf(str);
            if (n==k) return true;                  
        }
        return false;
    }
    public static void main(String[] args) throws IOException {
        MyReader reader = new MyReader(new InputStreamReader(System.in));
        PrintWriter writer = new PrintWriter("C.out");
        int t = reader.nextInt();
        for (int tt = 0; tt < t; ++tt){
            int a = reader.nextInt();
            int b = reader.nextInt();
            int ans=0;
            Set<Integer> set = new HashSet<Integer>();
            for (int i=a; i<=b; ++i)
                for (int j=i+1; j<=b; ++j)
                    if (cycled(i,j)) { set.add(j); ans++; }
            writer.println("Case #" + (tt + 1) + ": " + ans);
        }
        writer.close();
    }
}
