// Nothing is Given, Everything is Earned.
#include<bits/stdc++.h>
using namespace std;

template<class T> constexpr auto vec(int sz=0,auto ...dim)
{
   if constexpr(sizeof...(dim)==0) return move(vector<T>(sz));
   else return move(vector(sz,vec<T>(dim...)));
}
template<auto val> constexpr auto vec(int sz=0,auto ...dim)
{
   if constexpr(sizeof...(dim)==0) return move(vector(sz,val));
   else return move(vector(sz,vec<val>(dim...)));
}

int main()
{
   int n; cin>>n;
   auto a=vec<int>(n,n);
   for(int i=0,k=n-1;i<n;i+=2)
   {
      for(int j=0;j<k;j++)
         a[i][j]=a[i+j][k]=1;
      k-=2;
   }
   for(auto i:a)
   {
      for(auto j:i) cout<<(j?'B':'W');
      cout<<"\n";
   }
   return 0;
}