import java.util.Scanner;
import java.io.*;
import java.lang.Math;


public class C{
	public static int recycle(String str){
		String[] numbers = str.split(" ");
		int min = Integer.parseInt(numbers[0]);
		int max = Integer.parseInt(numbers[1]);
		int ret = 0;

		for(int i = min; i < max; i++){
			String num = i + "";
			int len = num.length();
			int k = i;
			for(int j = 1; j < len; j++){
				k = (k/10) + (int)java.lang.Math.pow(10.0,(double)(len-1))*(k%10);
				if (k > i && k <= max)
					ret++;
				else if(k == i)
					break;
			}
		}

		return ret;
	}

	public static void main(String[] args){
		Scanner sc = null;
		String next;
		int out;
		try{
			sc = new Scanner(new File("C-large.in"));
			int cases = Integer.parseInt(sc.nextLine());
			int current = 0;
			

			FileWriter fs = new FileWriter("output.txt");
			BufferedWriter buff = new BufferedWriter(fs);
			while(current < cases){
				next = sc.nextLine();
				current++;
				out = recycle(next);
				buff.write("Case #" + current + ": " + out + "\n");
			}
			buff.close();
		}
		catch(Exception ex){}
	}
}
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;


public class QuestionA extends Question{

	private static Map<Character, Character> translationMap;
	private static boolean isInit;
	private StringBuilder sb;
	
	public QuestionA(Result result, Counter counter)
	{
		super(result, counter);
		if (!isInit) {
			init();
			isInit=true;
		}
	}
	
	private void init() {
		translationMap = new HashMap<Character, Character>();
		String text = "zyeq"+"ejp mysljylc kd kxveddknmc re jsicpdrysi"+"rbcpc ypc rtcsra dkh wyfrepkym veddknkmkrkcd"+"de kr kd eoya kw aej tysr re ujdr lkgc jv";
		String translation = "qaoz"+"our language is impossible to understand"+"there are twenty six factorial possibilities"+"so it is okay if you want to just give up";
		for (int i = 0; i < text.length(); i++) {
			if (!translationMap.containsKey(text.charAt(i)))
				translationMap.put(text.charAt(i), translation.charAt(i));
		}
	}

	@Override
	public void readInput(Scanner scanner) {
		sb = new StringBuilder();
		sb.append(scanner.nextLine());
	}
	
	@Override
	public String solution() {
		for (int i = 0; i < sb.length(); i++) {
			sb.setCharAt(i, translationMap.get(sb.charAt(i)));
		}
		return sb.toString();
	}


}
