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.IOException;
import java.io.PrintWriter;
import java.util.Scanner;

public class MainClass {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(new File("C-small-attempt0.in"));
		PrintWriter out = new PrintWriter(new File("RecycledNumbers.out"));

		int N = sc.nextInt();
		for (int i = 0; i < N; i++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			String s1, s2;
			int count = 0;
			for (int j = B; j > A; j--) {
				for (int k = A; k < j; k++) {
					s1 = "" + k;
					s2 = "" + j;
					s1 = s1 + s1;
					if (s1.contains(s2)) {
						count++;
					}

				}
			}
			out.println("Case #" + (i + 1) + ": " + count);
		}
		out.close();

	}

}
