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.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;


public class C {
	public static void main(String[] args) throws FileNotFoundException {
		Scanner read = new Scanner(new File("C-small-attempt0.in"));
		PrintWriter out = new PrintWriter(new File("c-small.out"));
		int numberOfTests = read.nextInt();
		for (int i = 1; i <= numberOfTests; i++) {
			int a = read.nextInt();
			int b = read.nextInt();
			int countOfDigits = 0;
			int t = 1;
			while (a / t != 0) {
				countOfDigits++;
				t *= 10;
			}
			t /= 10;
			int result = 0;
			for (int n = a; n < b; n++) {
				int m = n;
				for (int k = 1; k < countOfDigits; k++) {
					int lastDigit = m % 10;
					m = m / 10;
					m = lastDigit * t + m;
					if (m <= b && m > n) {
						result++;
					}
				}
			}
			
			out.println(String.format("Case #%d: %d", i, result));
		}
		out.close();
	}
}
