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.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.Scanner;
import java.io.BufferedWriter;

public class D {
	public static void main(String[] args) throws IOException {
		int n;

		InputStreamReader reader = new InputStreamReader(new FileInputStream(
				args[0]));
		BufferedReader read = new BufferedReader(reader);
		BufferedWriter write = new BufferedWriter(new OutputStreamWriter(
				new FileOutputStream(args[1])));

		// Scanner scan = new Scanner(System.in);
		n = Integer.parseInt(read.readLine());
		// n = scan.nextInt();
		for (int i = 0; i < n; i++) {
			String p = read.readLine();
			write.write("Case #" + (i + 1) + ": " + holy(p, read));
			write.newLine();
		}
		write.flush();
		write.close();
	}

	static int holy(String r, BufferedReader read) throws IOException {
	    String p = r;
        String s, temp, m;
        int a = 0;
        int b = 0;
        int panjang = 0;
        int result = 0;

        a = Integer.parseInt(p.substring(0, p.indexOf(" ")));
        b = Integer.parseInt(p.substring(p.indexOf(" ") + 1, p.length()));

        for (int i = a; i <= b; i++) {
            s = Integer.toString(i);
            panjang = s.length();
            for (int j = 1; j < panjang; j++) {
                temp = s.substring(0, j);
                m = s.substring(j, panjang) + temp;
                if (Integer.parseInt(m) == i) {
                } else 
                if (Integer.parseInt(m) <= b && Integer.parseInt(m) >= a) {
                    result++;
                }
            }
        }
        
        if ((result % 2) == 0) {
            result = result/2;
        } else
        if (result % 2 == 1) {
            result = result/2+1;
        }
        
        return result;
	}
}