#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using ull = unsigned long long;
template <class T>
using max_heap = priority_queue<T>;
template <class T>
using min_heap = priority_queue<T, vector<T>, greater<>>;
ll ll_min = numeric_limits<ll>::min();
ll ll_max = numeric_limits<ll>::max();
ll ALPHABET_N = 26;
static const ll INF = ll_max / 10;
#define rep(i, n) for (ll i = (ll)0; i < (ll)n; i++)
#define rep_(i, k, n) for (ll i = (ll)k; i < (ll)n; i++)
#define all(a) a.begin(), a.end()

int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	ll h, w;
	cin >> h >> w;
	rep(i, h)
	{
		rep(j, w)
		{
			if (i % 4 == 0 || i % 4 == 1)
			{
				if (j % 2 == 0)
					cout << 'o';
				else
					cout << 'x';
			}
			else
			{
				if (j % 2 == 0)
					cout << 'x';
				else
					cout << 'o';
			}
		}
		cout << endl;
	}
	return 0;
}