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 trupti;


import java.io.*;
import java.io.FileNotFoundException;
import java.util.Scanner;

public class ok2 
{
    public static void main(String[] args) 
	{
		int cn=0;
        
        try 
		{
            
			FileOutputStream out=new FileOutputStream("out9.out");
            Scanner scanner = new Scanner(new FileReader("C-small-attempt6.in"));
			int n=scanner.nextInt();
		//	scanner.nextLine();
            while (n!=cn) {
				cn++;
				int q=0;
				int a=scanner.nextInt();
				int b=scanner.nextInt();
				int no=0;
				for(int r=a;r<=b;r++)
				{ 
					String str=r+"";
				//	System.out.println("str"+str);
					do{
						char c=str.charAt(0);
						String str1=str.substring(1, str.length()); 
						str=str1+c;
					//	System.out.println(str);
						no=Integer.parseInt(str);
					//	System.out.println("no"+no);
						if((no<r)&(a<=no)&(no<=b))
						{//System.out.println("no:"+no+"  r:  "+r);
							q++;
						}
						
					}while(no!=r);
				}


				out.write(("Case #"+cn+": "+q+"\n").getBytes());
				
				// out.write(("\n").getBytes());
				 System.out.println("Case #"+cn+": "+q);
				 //System.out.println();
            }
        } catch (Exception e) {}
                
	}
}