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 c {
	public static int count(String A, String B) {
		int count=0;
		int a = Integer.parseInt(A);
		int b = Integer.parseInt(B);
		for(int i=a; i<=b;i++) {
			int n = i;
			int len = String.valueOf(i).length();
			for(int j= 1;j < len;j++) {
				String mod = String.valueOf(i).substring(len-j, len) + String.valueOf(i).substring(0, len - j);
				int m = Integer.parseInt(mod);
				if(a<=n && n<m && m<=b)  {
					count ++;
				}
			}
		}
		return count;
	}
	public static void main(String args[])throws Exception {
		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		int T = Integer.parseInt(in.readLine());
		for(int i=0;i<T;i++) {
			String line = in.readLine();
			String n[] = line.split(" ");
			System.out.println("Case #" + (i+1) + ": " + count(n[0] , n[1]));
		}
	}
}
