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.*;
public class codejam2
{

    void kick() throws IOException

    {
        FileReader fr=new FileReader("input.in");
        BufferedReader br=new BufferedReader(fr);

        FileWriter fw=new FileWriter("output.in");
        BufferedWriter bw=new BufferedWriter(fw);
        PrintWriter pw=new PrintWriter(bw);

        String txt="";
        int tc=Integer.parseInt(br.readLine());
        int c=0;
        

        while((txt=br.readLine())!=null)
        {

            StringTokenizer st=new StringTokenizer(txt);
            int a=Integer.parseInt(st.nextToken());
            int b=Integer.parseInt(st.nextToken());
            int posi=0;

            for(int i=a; i<b; i++)
            {
                for(int j=i+1; j<=b; j++)
                {
                    String a1=Integer.toString(i);
                    String b1=Integer.toString(j);

                    if(pos(a1,b1))
                       { posi++;}

                }
            }
            
            c++;
            pw.println("Case #"+c+": "+posi);

        }
        
        

        pw.close();
        bw.close();
        fw.close();

        br.close();
        fr.close();
    }

    boolean pos(String s,String p)
    {

        p=p+p;

        for(int j=0; j<s.length(); j++)
        {
            String subs=p.substring(j,j+(s.length()));
            if(s.equalsIgnoreCase(subs))
            {
                return true;
            }
        }
        return false;
    }
}