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.util.ArrayList;
import java.util.Formatter;
import java.util.Scanner;

public class RecycledNumbers
{
	private Scanner fileReader;
	private File input;
	private Formatter fileWriter;
	private File output;

	public RecycledNumbers() throws FileNotFoundException
	{
		input = new File("C-small-attempt0.in");
		fileReader = new Scanner(input);
		output = new File("output.txt");
		fileWriter = new Formatter(output);
	}

	public int pairsByLine(String inLn)
	{
		int outLn = 0;
		String[] bounds = inLn.split(" ");
		int A = Integer.parseInt(bounds[0]);
		int B = Integer.parseInt(bounds[1]);
		ArrayList<String> done = new ArrayList<String>();
		for (int t = A; t <= B; t++)
		{
			String s = t + "";
			for (int i = s.length() - 1; i > 0; i--)
			{
				String s1 = s.substring(i, s.length());
				String s2 = s.substring(0, i);
				String res = s1 + s2;
				int reversed = Integer.parseInt(res);
				if (reversed <= B 
						&& reversed <= B 
						&&t<reversed
						&& (reversed + "").length() == s.length()
					    && !done.contains((s+reversed+"")))
						
				{
					done.add((s+reversed+""));
					System.out.println(s + "-->" + reversed);
					outLn++;
				}
			}
		}
		return outLn;
	}

	private boolean repeated(String s)
	{
		boolean repeated = false;
		for (int i = 0; i < s.length(); i++)
		{
			for (int j = i + 1; j < s.length(); j++)
			{
				if (s.charAt(i) == s.charAt(j))
				{
					repeated = true;
				}
			}
		}
		return repeated;
	}

	public void getPairs()
	{
		int i = 0;
		int testcases = Integer.parseInt(fileReader.nextLine());
		while (fileReader.hasNextLine())
		{
			i++;
			String line = fileReader.nextLine();
			fileWriter.format("%s%s%s", "Case #" + i + ": ", pairsByLine(line)
					+ "", "\n");
		}
		fileWriter.close();
	}

	public static void main(String[] args) throws FileNotFoundException
	{
		RecycledNumbers rec = new RecycledNumbers();
		rec.getPairs();
	}

}
