#include<bits/stdc++.h>

int main() {
	using namespace std;
	cin.tie(nullptr)->sync_with_stdio(false);
	int N; cin >> N; string S; cin >> S;

	auto get_nxt = [&](const char& c, const array<int64_t, 2>& cur) -> array<int64_t, 2> {
		if (c == 'U') {
			return {cur[0], cur[1] + 1};
		}
		if (c == 'R') {
			return {cur[0] + 1, cur[1]};
		}
		if (c == 'D') {
			return {cur[0], cur[1] - 1};
		}
		if (c == 'L') {
			return {cur[0] - 1, cur[1]};
		}
		return {0, 0};
	};

	// unset: T
	// set: T+2
	// reset: T+1
	const int offset = 30;
	set<array<int64_t, 2>> path;
	vector<vector<int>> vis(60, vector<int>(60, -1));
	int T = 0;
	for (int mask = 0; mask < (1 << N); ++mask) {
		array<int64_t, 2> cur = {0, 0};
		bool ok = true;
		T += 2;
		vis[cur[0] + offset][cur[1] + offset] = T;
		for (int x = 0; x < N && ok; ++x) {
			auto nxt = get_nxt(S[x], cur);
			if (mask & (1 << x)) {
				cur = nxt;
				if (vis[nxt[0] + offset][nxt[1] + offset] >= T-1) {
					if (vis[nxt[0] + offset][nxt[1] + offset] <= T-1) ok = false;
				}
				vis[nxt[0] + offset][nxt[1] + offset] = T;
			} else {
				if (vis[nxt[0] + offset][nxt[1] + offset] >= T-1) {
					if (vis[nxt[0] + offset][nxt[1] + offset] == T) ok = false;
				}
				vis[nxt[0] + offset][nxt[1] + offset] = T-1;
			}
		}
		if (ok) {
			path.insert(cur);
		}
	}

	// sort(path.begin(), path.end());
	// path.erase(unique(path.begin(), path.end()), path.end());
	cout << int(path.size()) << '\n';
	for (auto [a, b] : path) {
		cout << a << ' ' << b << '\n';
	}
}