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.File;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class RecycledNumbers {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(new File("resource/input.in"));
		int T = sc.nextInt(); 
		int i = 1;
		while (i<=T) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			System.out.println("Case #"+i+": "+process(A, B));
			i++;
		}
	}
	private static int process(int A, int B) {
		List<String> added = new ArrayList<String>();
		int counter = 0;
		for(int i=A; i<=B; i++){
			String s = i+"";
			for(int j=0; j<s.length()-1; j++){
				char ch = s.charAt(0);
				s = s.concat(ch+"");
				s = s.substring(1, s.length());
				int nx = Integer.valueOf(s);
				if(nx>=A && nx<=B && nx!=i && !added.contains(i+"|"+nx) && !added.contains(nx+"|"+i)){
					counter++;
					added.add(i+"|"+nx);
					added.add(nx+"|"+i);
				}
			}
		}
		return counter;
	}
}
