#include <bits/stdc++.h>
using namespace std;
vector<int> v, vv, vv2;
int main() {
  int t, n, a[1000], k, f = 0;
  cin >> n;
  if (n == 3) {
    for (int i = 1; i <= n; i++) {
      if (i % 2 != 0) {
        for (int j = 1; j <= n; j++) {
          if (j % 2 != 0) {
            cout << "W";
          } else
            cout << "B";
        }
        cout << endl;
      } else {
        for (int k = 0; k < n; k++) {
          cout << "B";
        }
        cout << endl;
      }
    }
  } else {
    for (int i = 1; i <= n; i++) {
      if (i % 2 != 0) {
        for (int j = 1; j <= n; j++) {
          if (j % 2 != 0)
            cout << "W";
          else
            cout << "B";
        }
        cout << endl;
      } else {
        for (int j = 1; j <= n; j++) {
          if (j % 2 != 0)
            cout << "B";
          else
            cout << "W";
        }
        cout << endl;
      }
    }
  }
  return 0;
}
