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

public class TestC {

	/**
	 * @param args
	 */
	public static void main(String[] arg) {
		try {
			String filein = "testC.in";
			String fileout = "testC.out";

			String currentdir = System.getProperty("user.dir");

			Scanner scanner = new Scanner(new File(currentdir + "/" + filein));
			FileWriter fWriter = new FileWriter(new File(currentdir + "/" + fileout));
			String line = "", resultat = "";

			int i = 0;

			while (scanner.hasNextLine()) {
				line = scanner.nextLine();
				if (i == 0) {
					try {
						Integer iNumber = Integer.valueOf(line);
					} catch (Exception ex) {
						resultat = " NaN !!!!";
						break;
					}
					i++;
					continue;
				}

				resultat = "Case #" + i + ": ";

				String[] s = line.split(" ");

				Integer A = Integer.valueOf(s[0]);
				Integer B = Integer.valueOf(s[1]);

				if (A < 10) {
					resultat += "0";
				} else {
					int n = 0;
					for (int j = A; j <= B; j++) {
						String n0 = Integer.toString(j);

						for (int k = 1; k < n0.length(); k++) {
							String first = n0.substring(0, k);
							String second = n0.substring(k, n0.length());

							String ricycled = second + first;
							Integer iRecycl = Integer.valueOf(ricycled);

							if (iRecycl > j && iRecycl <= B) {
								n++;
							}
						}
					}
					resultat += "" + n;
				}
				fWriter.append(resultat + "\r\n");

				i++;
			}
			scanner.close();
			fWriter.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}
