import java.util.*;
public class Chessboard {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int Size = scan.nextInt();
        String[][] board = new String[Size][Size];
        boolean isWhite = false;
        for(int y = 0; y < board.length; y++) {
            isWhite = !isWhite;
            for(int x = 0; x < board[y].length; x++) {
                if(isWhite) {
                    board[y][x] = "W";
                }
                if(!isWhite) {
                    board[y][x] = "B";
                }
                isWhite = !isWhite;
            }
        }
        
        /*This is the print statment*/
        for(int i = 0; i < board.length; i++) {
            System.out.println(Arrays.toString(board[i]));
        }
    }
}