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 ProblemC
{



  public static void main(String[] args) throws IOException
  {
	FileReader fr = new FileReader(args[0]);
	BufferedReader br = new BufferedReader(fr);
	String[] splittArray;
	int[] points;
	int A,B,res;
	int T = Integer.parseInt(br.readLine());
	//System.out.println(T);

	String dummy;
	String result="";
	for(int i=1;i<=T;i++) {
		dummy=br.readLine();
		splittArray=dummy.split(" ");
		A=Integer.parseInt(splittArray[0]);
		B=Integer.parseInt(splittArray[1]);
		res=0;
		for(int j=A;j<B;j++) {
			
			res+=permutes(j,new Integer(j).toString(),B);
		}
		
		result+="Case #"+i+": "+res;
		if(i<T) result+="\r\n";
	}
	br.close();





	FileWriter writer;
  	File file;
  
	     file = new File(args[1]);
     try {
      
       writer = new FileWriter(file ,true);
       
       // Text wird in den Stream geschrieben
      
       writer.write(result);
       
       
       // Schreibt den Stream in die Datei
       // Sollte immer am Ende ausgefÃ¼hrt werden, sodass der Stream 
       // leer ist und alles in der Datei steht.
       writer.flush();
       
       // SchlieÃt den Stream
       writer.close();
    } catch (IOException e) {
      e.printStackTrace();
    }
	
  }

public static int permutes(int b,String a,int c) {
	LinkedList<Integer> result=new LinkedList<Integer>();
	String dummy;
	int dummy2;

	for(int i=1;i<=a.length()-1;i++) {
		dummy=a.substring(i,a.length())+a.substring(0,i);
		dummy2=Integer.parseInt(dummy);
		if(dummy2>b && dummy2<=c && !result.contains(dummy2)) result.add(dummy2);
	}

	return result.size();
}
	

}

