package qual;

import java.util.Scanner;

public class RecycledNumbers {

	public static void main(String[] args) {
		new RecycledNumbers().run();

	}

	private void run() {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		for (int t = 0; t < T; t++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int result = solve(A, B);
			System.out.printf("Case #%d: %d\n", t + 1, result);
		}
	}

	public int solve(int A, int B) {
		int result = 0;
		for (int i = A; i <= B; i++) {
			int dig = (int) Math.log10(A/*same as B*/) + 1;
			int aa = i;
			for (int d = 0; d < dig - 1; d++) {
				aa = (aa % 10) * (int)Math.pow(10, dig - 1) + (aa / 10);
				if (i == aa) {
					break;
				}
				if (i < aa && aa <= B) {
//					System.out.printf("(%d, %d) ", i, aa);
					result++;
				}
			}
		}
		return result;
	}

}

import java.io.*;

public class google3
{

void main()throws IOException
{

 try{
  // Open the file that is the first 
  // command line parameter
  FileInputStream fstream = new FileInputStream("C-small-attempt0.in.txt");
  // Get the object of DataInputStream
  DataInputStream in = new DataInputStream(fstream);
  BufferedReader br = new BufferedReader(new InputStreamReader(in));
  String strLine;
  strLine=br.readLine();
  int a=Integer.parseInt(strLine);//Read File Line By Line
 String b[]=new String[a];
 int i=0;
  while ((strLine = br.readLine()) != null)   {
  // Print the content on the console
  b[i]=strLine;i++;
  }
  in.close();
  FileOutputStream out = new FileOutputStream(new File("output.txt"));
 
 int g=0;for(int l=0;l<a;l++)
{g=l+1;byte[] s = ("Case #"+g+": "+check(b[l])+"\n").getBytes();
out.write(s);
}
  
  
}
catch(Exception e){}
}
int check(String a){

String[] parts = a.split(" ");
int[] numbers = new int[parts.length];
int count=0;
for(int i = 0; i < parts.length; i++)
   { numbers[i] = Integer.parseInt(parts[i].trim());
    }
    
    for(int i=numbers[0];i<=numbers[1];i++)
    {for(int j=i+1;j<=numbers[1];j++)
    {
       count+=ret(i,j);
    }
    
    }
    return count;
}

int ret(int a,int b)
{
String c=Integer.toString(a);

String d=Integer.toString(b);

for(int i=0;i<c.length();i++)
{
if((c.substring(i,c.length())+c.substring(0,i)).equals(d))
{return 1;}

}
return 0;
}
}



