#include <bits/stdc++.h>
#ifndef ONLINE_JUDGE
#include <bits/Bingbong.h>
#endif
using namespace std;
#define i64 long long
#define pi acos(-1)
void solve() {
  int n;
  cin >> n;
  vector<vector<char>> a(n + 1, vector<char>(n + 1));
  int cnt = n - 1;
  for (int i = 1; i <= n; i++) {
    if (i & 1) {
      for (int j = cnt; j >= 1; j--) {
        a[i][j] = 'B';
      }
      cnt -= 2;
    }
  }
  cnt = 3;
  for (int j = n - 1; j >= 1; j -= 2) {
    for (int i = cnt; i <= n; i++) {
      a[i][j] = 'B';
    }
    cnt += 2;
  }
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= n; j++) {
      if (a[i][j] == 'B')
        continue;
      else
        a[i][j] = 'W';
    }
  }
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= n; j++) {
      cout << a[i][j];
    }
    cout << endl;
  }
}
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int t = 1;
  // cin >> t;
  while (t--) solve();
  return 0;
}