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.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {

	private static BufferedReader bufferedReader = new BufferedReader(
			new InputStreamReader(System.in));

	public static void main(String[] args) throws IOException {
		String line = bufferedReader.readLine();
		int cases = Integer.parseInt(line);

		for (int i = 1; i <= cases; i++) {
			line = bufferedReader.readLine();
			String[] split = line.split(" ");

			int A = Integer.parseInt(split[0]);
			int B = Integer.parseInt(split[1]);

			HashSet<String> usedPairs = new HashSet<String>();

			int answer = 0;
			int duplicates = 0;
			if (B > 10) {
				for (int j = A; j < B; j++) {
					String number = "" + j;
					// System.err.println("Current number: " + number);
					for (int k = 0; k < number.length(); k++) {
						String rotated = number.substring(k)
								+ number.substring(0, k);
						// System.err.println("Rotated number: " + rotated);
						int a = Integer.parseInt(number);
						int b = Integer.parseInt(rotated);

						if (Math.min(a, b) >= A && a != b
								&& Math.max(a, b) <= B) {
							String hashKey;
							if (a < b) {
								hashKey = number + rotated;
							} else {
								hashKey = rotated + number;
							}
							if (!usedPairs.contains(hashKey)) {
								answer++;
								usedPairs.add(hashKey);
								// System.err.println("Found a new pair!");
							} else {
								/*
								 * System.err
								 * .println("Found a duplicate: Number - " +
								 * number + ", Rotated: " + rotated);
								 */
								duplicates++;
							}
						}
					}
				}
			}
			// System.err.println("Found " + duplicates + " duplicated pairs");
			System.out.println("Case #" + i + ": " + answer);
		}
	}

}
