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 c;

import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class C {

	Set<Integer>[] c = new HashSet[2000001];

	public C()
	{
		Scanner s = new Scanner(System.in);

		int t = s.nextInt();

		for(int i =0; i < t;i ++)
		{
			int a = s.nextInt();
			int b = s.nextInt();

			for(int j = a; j <=b; j++)
			{
				c[j]= new HashSet<Integer>();
			}

			int digits = (a+"").toCharArray().length;

			for(int j = Math.min(a, b); j<=Math.max(a, b); j++)
			{
				int newJ = j;

				for(int k = 1; k < digits; k++)
				{
					int dig = newJ%10;
					newJ = newJ/10;
					newJ += dig*Math.pow(10, digits-1);


					if(newJ>=a && newJ<=b && newJ!=j)
					{
						int min = Math.min(newJ, j);
						int max = Math.max(newJ, j);
						c[min].add(max);
						//System.out.println(j+" "+min+" "+max);
					}
				}
			}
			
			long tot = 0;
			
			for(int j = a; j <=b; j++)
			{
				tot+=c[j].size();
			}
			
			System.out.println("Case #"+(i+1)+": "+tot);
		}
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		new C();

	}

}
