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));
			
		}
		
		
		

	}
	
	
}
package recyclednumbers;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;


public class SimpleReader {

	private BufferedReader br;
	private int line = 0;
	
	public SimpleReader() {
		String filename = prompt();
		setReader(filename);
	}
	
	public SimpleReader(String filename) {
		setReader(filename);
	}
	
	private String prompt() {
		System.out.println("Input file: ");
		BufferedReader bufr = new BufferedReader(
									new InputStreamReader(System.in));
		String filename = null;
		try {
			filename = bufr.readLine();
		} catch (IOException e) {
			System.err.println("At prompt: " + e.getMessage());
		}
		return filename;
	}
	
	private void setReader(String filename) {
		try {
			br = new BufferedReader(new FileReader(filename));
		} catch (IOException e) {
			System.err.println(e.getMessage());
		}
	}
	
	public String readLine() {
		try {
			line++;
			return br.readLine();
		} catch (IOException e) {
			System.err.println("Line " + (line - 1) + ": " + e.getMessage());
			return null;
		}
	}
	
	public int readInt() {
		return Integer.parseInt(readLine());
	}
	
	public int[] readIntArray() {
		String[] tokens = readLine().split(" ");
		int[] ret = new int[tokens.length];
		for (int i = 0; i < tokens.length; i++) {
			ret[i] = Integer.parseInt(tokens[i]);
		}
		return ret;
	}
	
	public String[] readStringArray() {
		return readLine().split(" ");
	}
}
