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;
	}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package rotatematrix;
import java.io.*;
/**
 *
 * @author FARHAN
 */
public class Main {

    /**
     * @param args the command line arguments
     */


    public static void main(String[] args) throws FileNotFoundException, IOException{
        // TODO code application logic here
      FileInputStream fstream = new FileInputStream("D:/test.in");
  // Get the object of DataInputStream
  DataInputStream in = new DataInputStream(fstream);
  BufferedReader br = new BufferedReader(new InputStreamReader(in));
  String strLine;
  //Read File Line By Line
 Combination c = new Combination();
 
  while ((strLine = br.readLine()) != null)   {
  // Print the content on the console
       int testCaseCount = Integer.parseInt(strLine);

       for(int i=0;i<testCaseCount;i++){
       strLine = br.readLine();
     String [] strArray = strLine.split(" ");

      int result= c.Tranverse(Integer.parseInt(strArray[0]), Integer.parseInt(strArray[1]));
           System.out.println("Case #"+(i+1)+": "+result);
      }

  }

 // System.out.println (strLine);
  
  //Close the input stream
  in.close();
   



    }

}
