import java.io.*;

class code1
{
	public static void main(String args[]) throws Exception 
	{
		File ii = new File ("C-small-attempt1.in");
		FileInputStream fis = new FileInputStream(ii);
		BufferedReader  br = new BufferedReader(new InputStreamReader (fis));
		int cases = Integer.parseInt(br.readLine());
		FileOutputStream fout = new FileOutputStream ("output.txt");
		DataOutputStream dout = new DataOutputStream (fout);
		int total=0;
		for(int i=0;i<cases;i++){
		String temp = br.readLine();
		String parts [] = temp.split(" ");
		int lower = Integer.parseInt(parts[0]);
		int upper = Integer.parseInt(parts[1]);
		System.out.println(lower+" "+upper);
		
		for(int j=lower;j<=upper;j++)
		{
			int abc = j;int length=0;
			if(j<10)continue;
			while (abc!=0){abc/=10;length++;}
			abc=j;
			for(int m=0;m<length-1;m++){
				int shift = abc%10;
				abc=abc/10;
				System.out.println("hi "+j);
				abc=abc+shift*power(10,length-1);
				if(abc<=upper&&shift!=0&&abc>j)total++;
				System.out.println(total);
			}
		}
 		dout.writeBytes("Case #"+(i+1)+ ": "+total+"\n");
 		total=0;
		}//for close
		
	}

	private static int power(int i, int j) {
		int no=1;
		for(int a=0;a<j;a++){no=10*no;}
		return no;
	}
}

import java.io.*;
import java.util.HashSet;
import java.util.Scanner;

public class Numbers {

    public static void main(String[] args) throws IOException {
        Numbers numbers = new Numbers();
        numbers.findNumbers();
    }

    public void findNumbers() throws IOException {
        Scanner sc = new Scanner(new File("D:/testing/a.txt"));
        BufferedWriter bf = new BufferedWriter(new FileWriter("D:/testing/b.txt", false));
        HashSet<String> hs = new HashSet<String>();

        int T = sc.nextInt();
        for (int i = 1; i <= T; i++) {
            int a = sc.nextInt();
            int b = sc.nextInt();
            hs.clear();
            
            int digits = (int) Math.log10(a);

            for (int n = a; n <= b; n++) {
                for (int j = 1; j <= digits; j++) {
                    int m = swapDigits(n, j);
                    if (n < m && m <= b) {
                        hs.add(String.valueOf(m) + String.valueOf(n));
                    }
                }
            }
            int val=hs.size();
            System.out.println("Case #" + i+": "+val);
            bf.write("Case #" + i+": "+val+ "\n");
        }
        bf.close();
    }

    public int swapDigits(int val, int d) {
        int power=(int)Math.pow(10, d);
        int x = val/power;
        int y = val % power;
        return y * (int) Math.pow(10, (int) Math.log10(x) + 1) + x;
    }
}
