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){}
	}
}
package utils;

/**
 *
 * @author Fabien Renaud
 */
public class StopWatch {

  private long startTime = -1;
  private long stopTime = -1;
  private boolean running = false;

  public StopWatch start() {
    startTime = System.currentTimeMillis();
    running = true;
    return this;
  }

  public StopWatch stop() {
    stopTime = System.currentTimeMillis();
    running = false;
    return this;
  }

  public long getElapsedTime() {
    if (startTime == -1) {
      return 0;
    }
    if (running) {
      return System.currentTimeMillis() - startTime;
    } else {
      return stopTime - startTime;
    }
  }

  public String getElapsedSeconds() {
    return String.format("%1$.4f", getElapsedTime() / 1000.0f);
  }

  public StopWatch reset() {
    startTime = -1;
    stopTime = -1;
    running = false;
    return this;
  }
}
