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.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;


public class RecycledNumbers {

	public static void main(String[] args) throws IOException {

		Scanner sc = new Scanner(new FileReader("C-small-attempt0.in"));
		PrintWriter pw = new PrintWriter(new FileWriter("outputC1.txt"));

		int caseCount = sc.nextInt();
		sc.nextLine();

		int a, b, count, c, k, l;
		for (int caseNum = 0; caseNum < caseCount; caseNum++) {

			a = sc.nextInt();
			b = sc.nextInt();

			count = 0;
			for (int i = a; i <= b; i++) {

				k = 10;
				l = (int) Math.pow(10, (int) Math.log10(i));
				HashSet<Integer> pairs = new HashSet<Integer>();
				while (k < i) {
					c = (i % k)*l + i/k;

					if (i < c && c <= b) {
						pairs.add(c);
					}

					k *= 10;
					l /= 10;
				}
				count += pairs.size();
			}

			pw.write("Case #" + (caseNum + 1) + ": ");
			pw.write(count + "\n");
		}

		pw.flush();
		pw.close();
		sc.close();
	}
}
