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.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.StringTokenizer;

public class ProblemC {

	/**
	 * @param args
	 * @throws IOException 
	 * @throws NumberFormatException 
	 */
	public static void main(String[] args) throws NumberFormatException, IOException {
		FileReader fileread = new FileReader("C-small-attempt0.in");
		FileWriter filewrite = new FileWriter("C-small-attempt0.out");
		BufferedReader in = new BufferedReader(fileread);
		int cases = Integer.parseInt(in.readLine()), mycase = 0;
		StringTokenizer s;
		while(cases-- > 0) {
			int A, B, count = 0;
			s = new StringTokenizer(in.readLine());
			A = Integer.parseInt(s.nextToken());
			B = Integer.parseInt(s.nextToken());
			for(int i = A; i < B; i++) {
				for(int j = i + 1; j <= B; j++) {
					String str = i + "";
					for(int c = 0; c < str.length(); c++) {
						String x = str.substring(c);
						String y = str.substring(0, c);
						String res = x + y;
						if(Integer.parseInt(res) == j) {
							count++;
							break;
						}
					}
				}
			}
			filewrite.write("Case #" + ++mycase + ": " + count + "\n");
		}
		filewrite.close();
	}

}
