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.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.Scanner;
import java.util.Set;
import java.util.regex.Pattern;


public class ProblemC {

	public static void main(String[] args) {

		Scanner input;
		try {
			input = new Scanner(new FileReader("C-small-attempt0.in"));
			PrintWriter output = new PrintWriter(new FileWriter("output3.txt"));

			int numberCases = input.nextInt();
			String data = input.nextLine();

			for (int i = 0; i < numberCases; i++) {
				output.print("Case #" + (i + 1) + ": ");

				data = input.nextLine();
				String[] intS = Pattern.compile(" ").split(data);
				int[] numbers = new int[intS.length];
				for (int j = 0; j < intS.length; j++) {
					numbers[j] = Integer.parseInt(intS[j]);
				}

				int lowerBound = numbers[0];
				int upperBound = numbers[1];
				output.print(calculatePossibilities(lowerBound, upperBound));
				output.print("\n");
			}

			output.flush();
			output.close();
			input.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public static int calculatePossibilities(int lowerBound, int upperBound) {

		Set allPossibilities = new HashSet();
		int numberDigits = (int) (Math.floor(Math.log10(lowerBound))) + 1;
		int currentNumber = 0;
		int lowPart = 0;
		int highPart = 0;
		//System.out.println("Digits " + numberDigits);
		for (int j = lowerBound; j <= upperBound; j++) { 
			Set permutations = new HashSet();
			for (int i = 1; i <= numberDigits - 1; i++) {
				lowPart = j % ((int) Math.pow(10, i));
				highPart = j / ((int) Math.pow(10, i));
				currentNumber = (lowPart * (int) Math.pow(10, numberDigits - i)) + highPart;
				//System.out.println(currentNumber + " <- j: " + j + " i:" + i + "  low " + lowPart + " high " + highPart);
				
				if (currentNumber >= lowerBound && currentNumber <= upperBound &&
						currentNumber > j) {
					permutations.add(currentNumber);

				}
				if (!permutations.isEmpty())
					allPossibilities.add(permutations);
			}
		}

		//System.out.println("A: " + allPossibilities.size());
		return allPossibilities.size();
	}
}
