import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;


public class Recycled {

	private static String in;
	private static String[] ins;
	private static BufferedReader buf;
	private static int cases;
	private static File arquivo = new File("output.txt");
	private static FileOutputStream fos;
	
	public static void main(String[] args) {
	
		buf = new BufferedReader(new InputStreamReader(System.in));
		try {
			fos = new FileOutputStream(arquivo);
		} catch (FileNotFoundException e1) {
			e1.printStackTrace();
			System.exit(0);
		}
		
		try {
			in = buf.readLine();
			cases = Integer.parseInt(in);
		} catch (IOException e) {
			e.printStackTrace();
			System.exit(0);
		}
		
		for (int i = 1; i <= cases; i++) {
			int result = 0;
			try {
				in = buf.readLine();
				ins = in.split(" ");
			} catch (IOException e) {
				e.printStackTrace();
				System.exit(0);
			}
			
			int A = Integer.parseInt(ins[0]);
			int B = Integer.parseInt(ins[1]);
			
			for (int numb = A; numb <= B; numb++) {
				result += reciclar(numb, A, B);
			}
			
			try {
				String res = "Case #" + i + ": " + result + System.getProperty("line.separator");
				fos.write(res.getBytes());
			} catch (IOException e) {
				e.printStackTrace();
				System.exit(0);
			}
		}

	}
	
	
	
	public static int reciclar(int numb, int A, int B) {
		int result = 0;
		ArrayList<Integer> usados = new ArrayList<Integer>();
		char[] numbvec = String.valueOf(numb).toCharArray();
		
		
		for (int i = 1; i < numbvec.length; i++) {
			String rot = new String();
			for (int j = i; j < numbvec.length + i; j++) {
				if (j >= numbvec.length) {
					rot += numbvec[j-numbvec.length];
				}
				else {
					rot += numbvec[j];
				}
			}
			int numbrot = Integer.parseInt(rot);
			
			
			if (numbrot >= A && numbrot <= B && numb != numbrot && !usados.contains(numbrot)) {
				if (numb < numbrot){
					result++;
					usados.add(numbrot);
					System.out.println("(" + numb + "),(" +numbrot+ ")");
				}
			}
		}

		return result;
	}

}
