import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
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-attempt1.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;
}
}



