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.*;
import java.util.*;
class RecycledNumbers
{
    public static void main(String args[]) throws Exception
    {
        Scanner in = new Scanner(new File("C-small-attempt0.in"));
        int t = Integer.parseInt(in.nextLine());
        for(int x = 1; x <= t; x++)
        {
            String st = in.nextLine();
            int a, b;
            a = Integer.parseInt(st.split(" ")[0]);
            b = Integer.parseInt(st.split(" ")[1]);
            int y = 0;
            if(a >= 10)
            {
                for(int i = a; i < b; i++)
                {
                    int n, m;
                    n = i;
                    String tmp = "" + n;
                    for(m = (n + 1); m <= b; m++)
                    {
                        for(int j = 1; j < tmp.length(); j++)
                        {
                            int tt = getNew(n, j);
                            if(tt == m && ("" + tt).length() == ("" + m).length() && a <= n && n < m && m <= b)
                            y++;
                        }
                    }
                }
            }
            System.out.println("Case #" + x + ": " + y);
        }
    }
    public static int getNew(int n, int a)
    {
        String s = "" + n;
        int  p = s.length() - a;
        String s2 = s.substring(p);
        String s3 = s.substring(0, p);
        s = s2 + s3;
        return Integer.parseInt(s);
    }
}