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.InputStreamReader;
import java.util.HashMap;
import java.util.Map;

import javax.swing.JFrame;
import javax.swing.JTextField;

public class gcj_c {
	public static void main(String[] args) {
	try{
		BufferedReader buff = new BufferedReader(new InputStreamReader(System.in));
		String T = buff.readLine();
		for(int p=0;p<Integer.parseInt(T);p++){
			String AB = buff.readLine();
			String arr[] = AB.split(" ");
			String A = arr[0];
			String B = arr[1];
			int A_int = Integer.parseInt(A);
			int B_int = Integer.parseInt(B);
			int count = 0;
			for(int a = A_int;a<=B_int;a++){
				String a_str = String.valueOf(a);
				String a_con = a_str.concat(a_str);
				for(int b =a+1;b<=B_int;b++){
					String b_str = String.valueOf(b);
					CharSequence chr = b_str.subSequence(0, b_str.length());
					if(a_con.contains(chr)){
						//System.out.println("a_con: " + a_con + "b_str:" + b_str);
						count++;
					}
				}
			}
		System.out.println("Case #" + (p+1) + ": " + count);	
		}
	}catch(Exception e){System.out.println(e);}
	}
}
