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.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.PrintStream;
import java.util.Scanner;

//javac C.java && java C x.in x.out
public class C {
	public static void main(String[] args) throws FileNotFoundException {
		InputStream in = System.in;
		if(args.length>0)
			in = new FileInputStream(args[0]);
		PrintStream out = System.out;
		if(args.length>1)
			out = new PrintStream(args[1]);

		Solver s = new Solver(new Scanner(in),out);
		//Multiple case input
		s.cases();
		//Single case input
		//s.go();
	}
}

class Solver {
	Scanner in;
	PrintStream out;
	public Solver(Scanner scanner, PrintStream printStream) {
		in = scanner;
		out = printStream;
	}

	public void cases() {
		int numCases = in.nextInt();
		in.nextLine();
		for(int i=0;i<numCases;i++) {
			out.print("Case #"+(i+1)+": ");
			go();
		}
	}

	public void go() {
		int A = in.nextInt();
		int B = in.nextInt();
		int ans = 0;
		
		int mod = 1;
		int a = A;
		int digs = 0;
		while(a>0) {
			a/=10;
			mod*=10;
			digs++;
		}
		
		for(int n = A; n <= B; n++) {
			for(int m = n+1; m <= B; m++) {
				int nn=n;
				for(int i = 0; i < digs; i++) {
					nn=(nn+mod*(nn%10))/10;
					if(nn==m) {
						ans++;
						break;
					}
				}
			}
		}
		out.println(ans);
	}
}