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;
	}
}

package recycledNumbers;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class RecycledNumbers {
	
	public static String processaCaso(String linha, int i) {
		String[] nums = linha.split(" ");
		int a = Integer.parseInt(nums[0]);
		int b = Integer.parseInt(nums[1]);
		int numDistincPairs = 0;
		int lenNum = Integer.toString(a).length()-1;
		Set<Integer> ms = new HashSet<Integer>();
		for (; a < b; a++) {
			String n = Integer.toString(a);
			ms.clear();
			for (int j = 0; j < lenNum; j++) {
				int indice = lenNum-j;
				String strM = n.substring(indice)+n.substring(0,indice);
				int m = Integer.parseInt(strM);
				if (!(a < m && m <= b)) continue;
				ms.add(m);
			}
			numDistincPairs += ms.size();
		}
		return String.format("Case #%d: %d", i, numDistincPairs);
	}

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
        Scanner scan = new Scanner(new File(args[0]));
        int numTestCases = scan.nextInt();
        scan.nextLine();
        Writer saida = new FileWriter(args[0]+".out");
		for (int i = 1 ; i <= numTestCases; i++) {
			saida.write(processaCaso(scan.nextLine(),i)+"\n");
		}
		saida.close();
	}

}
