#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define pii pair<int,int>
#define LL long long
#define st first
#define nd second
#define endl '\n'
using namespace std;

int main() {
    
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int n;
  cin >> n;
  char m[n];
  for(int i = 0; i < n; ++i) {
    cin >> m[i];
  }
  set<pii> ans;
  for(int i = 0; i < (1 << n); ++i) {
    map<pii, int> set_points;
    set_points[{0, 0}] = 1;
    int x = 0, y = 0;
    bool possible = 1;
    for(int j = 0; j < n; ++j) {
      int xx = x, yy = y;
      if(m[j] == 'L') {
        xx -= 1;
      }
      else if(m[j] == 'R') {
        xx += 1;
      }
      else if(m[j] == 'D') {
        yy -= 1;
      }
      else {
        yy += 1;
      }
      if(set_points.find({xx, yy}) != set_points.end()) {
        int go = i & (1 << j);
        if(go > 0) {
          go = 1;
        }
        if(go != set_points[{xx, yy}]) {
          possible = false;
          break;
        }
      }
      if(i & (1 << j)) {
        set_points[{xx, yy}] = 1;
        x = xx;
        y = yy;
      }
      else {
        set_points[{xx, yy}] = 0;
      }
    }
    if(possible) {
      ans.insert({x, y});
    }
  }
  cout << ans.size() << endl;
  for(auto [x, y] : ans) {
    cout << x << " " << y << endl;
  }

}