#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  if (n == 3) {
    printf("WBW\n");
    printf("BWB\n");
    printf("WBW\n");
  } else {
    for (int i = 1; i <= n; i++) {
      for (int j = 1; j <= n; j++) {
        if ((i + j) % 2 == 1)
          printf("B");
        else
          printf("W");
      }
      printf("\n");
    }
  }
  return 0;
}
