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.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.Scanner;

public class ProblemC {
	public static void main(String[] args) throws FileNotFoundException {
		PrintStream out = new PrintStream(new FileOutputStream(new File(
				"c-small.out")));
		Scanner in = new Scanner(new File("C-small-attempt0.in"));

		int T = in.nextInt();

		for (int i = 1; i <= T; i++) {
			int A = in.nextInt();
			int B = in.nextInt();
			
			int count = 0;
			
			for(int n = A; n <= B; n++){
				String origstr = Integer.valueOf(n).toString();
				String str = shift(origstr);;
				while(!str.equals(origstr)){
					int shifted = Integer.parseInt(str);
					
					//System.out.printf("n: %d, shift: %s, shifted: %d, valid: %b\n", n, str, shifted, shifted > n);
					
					if(shifted > n && shifted <= B)
						count++;
					
					str = shift(str);
				}
			}
			
			out.printf("Case #%d: %d\n", i, count);
		}

		in.close();
		out.close();
	}
	
	public static String shift(String num){
		return num.charAt(num.length()-1) + num.substring(0,num.length()-1);
	}
}
