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.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.List;

public class Main {

	public static void main(String[] args) throws NumberFormatException,
			IOException {
		new Main().go(args);
	}

	void go(String[] args) throws NumberFormatException, IOException {
		short n;// no of test cases
		BufferedReader bufferedReader = new BufferedReader(
				new InputStreamReader(new FileInputStream(new File(args[0]))));
		BufferedWriter bufferedWriter = new BufferedWriter(
				new OutputStreamWriter(new FileOutputStream(new File(args[1]))));
		n = Short.parseShort(bufferedReader.readLine());
		for (short i = 0; i < n; i++) {
			String input = bufferedReader.readLine();
			StringBuffer output = new StringBuffer();
			// Main logic is here
			perform(input, output);
			bufferedWriter.write("Case #" + (i + 1) + ": " + output.toString()
					+ "\n");
			bufferedWriter.flush();
		}
		bufferedReader.close();
		bufferedWriter.close();
	}

	private void perform(String input, StringBuffer output) {
		// TODO Auto-generated method stub
		String[] split = input.split(" ");
		int A = Integer.parseInt(split[0]);
		int B = Integer.parseInt(split[1]);
		if (A < 10 || B < 10) {
			output.append(0);
			return;
		}
		List<Pair> recycledPairs = new ArrayList<Pair>();
		for (int i = A; i <= B; i++) {
			String n = new Integer(i).toString();
			for (int j = 1; j < n.length(); j++) {
				String m = rotate(n, j);
				if (!n.equals(m) && !m.startsWith("0")
						&& Integer.parseInt(m) >= A && Integer.parseInt(m) <= B) {
					Pair pair = new Pair(n, m);
					if (!recycledPairs.contains(pair))
						recycledPairs.add(pair);
				}
			}
		}
		output.append(recycledPairs.size());
	}

	private String rotate(String n, int i) {
		// TODO Auto-generated method stub
		StringBuffer buffer = new StringBuffer();
		int iterations = 0;
		while (iterations < n.length()) {
			buffer.append(n.charAt(i));
			i = (i + 1) % n.length();
			iterations++;
		}
		return buffer.toString();
	}

	class Pair {
		String n;
		String m;

		public Pair(String n, String m) {
			// TODO Auto-generated constructor stub
			this.n = n;
			this.m = m;
		}

		@Override
		public boolean equals(Object obj) {
			// TODO Auto-generated method stub
			if (obj instanceof Pair) {
				Pair temp = (Pair) obj;
				if ((temp.n.equals(this.n) && temp.m.equals(this.m))
						|| (temp.n.equals(this.m) && temp.m.equals(this.n))) {
					return true;
				}
			}
			return false;
		}

		@Override
		public String toString() {
			// TODO Auto-generated method stub
			return n + "," + m;
		}
	}
}

