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;
	}
}

package recyclednumbers;

import java.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.Scanner;


public class RN {
	public static void main(String[] args) throws Exception 
	{
		new RN().run();
	}
	
	void run() throws Exception 
	{	
		Scanner sc = new Scanner(new FileReader("C-small-attempt0.in"));
		PrintWriter pw = new PrintWriter(new FileWriter("CSmall.out"));
		
		int ntest = sc.nextInt();
		sc.nextLine();
	
		for(int test=1;test<=ntest;++test) 
		{
			String s = sc.nextLine();			
			String ss[] = s.split(" ");			
			int min = Integer.parseInt(ss[0]);
			int max = Integer.parseInt(ss[1]);	
			int count = num(min);	
			int cres = 1;
			int r = 0;
			String sres = "";
			int flag[] = new int[2000000];			
			for(int i=min;i<=max;i++){
				for(int j = 1; j<count;j++){	
					if(flag[i]==0){							
						sres = reverse(String.valueOf(i),j);	
						if(flag[Integer.parseInt(sres)]!=1 && Integer.parseInt(sres)!=i && min<=Integer.parseInt(sres) && Integer.parseInt(sres)<=max){							
							flag[Integer.parseInt(sres)] = 1;
							cres++;	
						}	
					}
				}
				flag[i]=1;
				r += cres*(cres-1)/2;
				cres = 1;
			}
			pw.print("Case #" + test + ": " + r);			
			pw.println();	
		}
		pw.close();
		sc.close();	
	}
	
	public String reverse(String s, int i){
		String s0 = s.substring(0,i);
		String s1 = s.substring(i,s.length());
		StringBuilder sb0 = new StringBuilder(s0);
		StringBuilder sb1 = new StringBuilder(s1);
		StringBuilder res = new StringBuilder((sb0.reverse().toString()+sb1.reverse().toString()));
		return res.reverse().toString();
	}
	
	public int num(int a){
		int count = 1;
		while(a/10!=0){
			a = a/10;
			count++;
		}
		return count;
	}
	
}
