#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  if (n == 3) {
    for (int i = 0; i < n; ++i) {
      if (i % 2 == 0) {
        for (int j = 0; j < n; ++j) {
          if (j % 2 == 0) {
            cout << "W";
          } else {
            cout << "B";
          }
        }
        cout << endl;
      } else {
        for (int j = 0; j < n; ++j) {
          cout << "B";
        }
        cout << endl;
      }
    }
  } else {
    for (int i = 0; i < n; ++i) {
      if (i % 2 == 0) {
        for (int j = 0; j < n; ++j) {
          if (j % 2 == 0) {
            cout << "W";
          } else {
            cout << "B";
          }
        }
        cout << endl;
      } else {
        for (int j = 0; j < n; ++j) {
          if (j % 2 == 0) {
            cout << "B";
          } else {
            cout << "W";
          }
        }
        cout << endl;
      }
    }
  }
}
