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

public class C {
	public static void main(String[] args) throws IOException {
		String filename = "C-small-attempt0";
		String inname = filename + ".in";
		String outname = filename + ".out";
		Scanner sc = new Scanner(new File(inname));
		//Scanner sc = new Scanner(System.in);
		PrintWriter out = new PrintWriter(new FileWriter(outname));

		int N = sc.nextInt();
		for (int t = 1; t <= N; t++) {
			int a = sc.nextInt();
			int b = sc.nextInt();
			int l = Integer.toString(a).length();
			int ans = 0;
			for(int n = a; n <= b; n++) {
				for(int i = 1; i < l; i++) {
					int front = n/((int)Math.pow(10, i));
					int back = n%((int)Math.pow(10, i));
					int m = back * (int) Math.pow(10,l-i) + front;
					//System.out.println(m + " " + n);
					if(m != n && m/(int)Math.pow(10,l-1) != 0 && n < m && m <= b) ans++;
				}
				
			}
			out.println("Case #" + t + ": " + ans);
			System.out.println("Case #" + t + ": " + ans);
		}
		out.close();
	}
}
