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));
			
		}
		
		
		

	}
	
	
}
//lukewillson
import java.io.PrintStream;
import java.io.File;
import java.util.Scanner;
public class C {    

    public static void main(String[] args) throws Exception {
        new DoC();
    }
}

class DoC {

    public DoC() throws Exception {
        //long time=System.currentTimeMillis();
        System.setOut(new PrintStream(new File("C.out")));
        Scanner sc = new Scanner(new File("C-small-attempt0.in"));
        int runs = Integer.parseInt(sc.nextLine());
        int run = 0;
        while (run++ < runs) {
            System.out.print("Case #" + run + ": ");
            int min=sc.nextInt();
            int max=sc.nextInt();
            int count=0;
            for(int i=min;i<=max;++i)
            {
                for(int j=i+1;j<=max;++j)
                {
                    if(recycle(i,j))
                        count++;
                }
            }
            System.out.println(count);
        }
        //System.out.println(System.currentTimeMillis()-time);
    }
    public boolean recycle(int A,int B)
    {
        String a=""+A;
        String b=""+B;
        for(int i=0;i<b.length();++i)
        {
            String temp=b.substring(i)+b.substring(0,i);
            if(a.equals(temp))
                return true;
        }
        return false;
    }
}
