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.math.BigInteger;
import java.util.Locale;
import java.util.StringTokenizer;

/**
 * User: Igor Kirov
 * Date: 14.04.12
 */
public class C implements Runnable {

    private int recycle(int t, int multiplier) {
        int cc = t % 10;
        while (cc == 0) {
            t = t / 10;
            t = t + cc * multiplier;
            cc = t % 10;
        }
        t = t / 10;
        t = t + cc * multiplier;
        return t;
    }

    private void solve() throws IOException {
        int a = nextInt();
        int b = nextInt();

        int temp = a / 10;
        int multiplier = 1;
        while (temp > 0) {
            multiplier *= 10;
            temp = temp / 10;
        }

        int ans = 0;
        boolean used[] = new boolean[b + 10];
        for (int i = a; i <= b; i++) {
            int next = recycle(i, multiplier);
            while (next != i) {
                if (next >= a && next <= b) {
                    ans++;
                }
                next = recycle(next, multiplier);
            }
        }
        writer.println(ans / 2);
    }

    public static void main(String[] args) {
        new Thread(null, new C(), "", 64 * 1024 * 1024).start();
    }

    StringTokenizer tokenizer;
    BufferedReader reader;
    PrintWriter writer;

    public void run() {
        try {
            try {
                Locale.setDefault(Locale.US);
            } catch (Exception ignored) {
            }

            reader = new BufferedReader(new FileReader("C.in"));
            writer = new PrintWriter(new FileWriter("C.out"));
            tokenizer = null;

            int tests = nextInt();
            for (int i = 0; i < tests; i++) {
                writer.printf("Case #%d: ", i + 1);
                solve();
                writer.flush();
            }

            reader.close();
            writer.close();
        } catch (Exception e) {
            e.printStackTrace();
            System.exit(1);
        }
    }

    private int nextInt() throws IOException {
        return Integer.parseInt(nextToken());
    }

    private long nextLong() throws IOException {
        return Long.parseLong(nextToken());
    }

    private BigInteger nextBigInteger() throws IOException {
        return new BigInteger(nextToken());
    }

    private double nextDouble() throws IOException {
        return Double.parseDouble(nextToken());
    }

    private String nextToken() throws IOException {
        while (tokenizer == null || !tokenizer.hasMoreTokens()) {
            tokenizer = new StringTokenizer(reader.readLine());
        }
        return tokenizer.nextToken();
    }
}