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//#pragma GCC optimize("O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("unroll-loops")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include <bits/stdc++.h>
using namespace std;
namespace debug {
template <class c> struct rge { c b, e; };
template <class c> rge<c> range(c i, c j) { return rge<c>{i, j}; }
template <class c> char spk(...);
template <class c> auto spk(c *a) -> decltype(cerr << *a, 0);
struct stream {
  ~stream() { cerr << endl; }
  template <class c>
  typename enable_if<sizeof spk<c>(0) != 1, stream &>::type operator<<(c i) {
    cerr << boolalpha << i;
    return *this;
  }
  template <class c>
  typename enable_if<sizeof spk<c>(0) == 1, stream &>::type operator<<(c i) {
    return *this << range(begin(i), end(i));
  }
  template <class a, class b> stream &operator<<(pair<a, b> p) {
    return *this << "(" << p.first << ", " << p.second << ")";
  }
  template <class c> stream &operator<<(rge<c> d) {
    *this << "[";
    for (auto it = d.b; it != d.e; it++)
      *this << ", " + 2 * (it == d.b) << *it;
    return *this << "]";
  }
  stream &_dbg(const string &s, int i, int b) { return *this; }
  template <class c, class... cs>
  stream &_dbg(const string &s, int i, int b, c arg, cs... args) {
    if (i == (int)(s.size()))
      return (*this << ": " << arg);
    b += (s[i] == '(') + (s[i] == '[') + (s[i] == '{') - (s[i] == ')') -
         (s[i] == ']') - (s[i] == '}');
    return (s[i] == ',' && b == 0)
               ? (*this << ": " << arg << "     ")._dbg(s, i + 1, b, args...)
               : (s[i] == ' ' ? *this : *this << s[i])
                     ._dbg(s, i + 1, b, arg, args...);
  }
};
} // namespace debug
#ifdef DEBUG
#define dout debug::stream()
#define dbg(...)                                                               \
  ((dout << "line:" << __LINE__ << " >> ")                                     \
       ._dbg(#__VA_ARGS__, 0, 0, __VA_ARGS__))
#else
#define dout
#define dbg(...)
#endif
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

const int N = 2e3 + 7;

int row_letter_cnt[N][26];
int col_letter_cnt[N][26];
int row_diff_cnt[N];
int col_diff_cnt[N];
bool row_vis[N], col_vis[N];

struct Op {
  int nr;
  char dir;
  char letter;

  friend ostream &operator<<(ostream &os, const Op &op) {
    os << op.dir << " " << op.nr + 1 << " " << op.letter;
    return os;
  }
};

int picture[N][N];

class Visualiser {
public:
  Visualiser(int n, int m) : n(n), m(m) {
    picture.resize(n, vector<char>(m, '.'));
  }

  void Paint(const Op &op) {
    if (op.dir == 'K') {
      for (int i = 0; i < n; i++) {
        picture[i][op.nr] = op.letter;
      }
    } else {
      for (int i = 0; i < m; i++) {
        picture[op.nr][i] = op.letter;
      }
    }
  }

  void Show() {
    for (int i = 0; i < n; i++) {
      for (int j = 0; j < m; j++) {
        cout << picture[i][j];
      }
      cout << '\n';
    }
  }

private:
  int n, m;
  vector<vector<char>> picture;
};

int main() {
  cin.tie(nullptr);
  ios_base::sync_with_stdio(false);
  int n, m;
  cin >> n >> m;
  for (int i = 0; i < n; i++) {
    string s;
    cin >> s;
    for (int j = 0; j < m; j++) {
      int l = s[j] - 'A';
      picture[i][j] = l;
    }
  }
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < m; j++) {
      row_diff_cnt[i] += row_letter_cnt[i][picture[i][j]] == 0;
      row_letter_cnt[i][picture[i][j]]++;
    }
  }
  for (int j = 0; j < m; j++) {
    for (int i = 0; i < n; i++) {
      col_diff_cnt[j] += col_letter_cnt[j][picture[i][j]] == 0;
      col_letter_cnt[j][picture[i][j]]++;
    }
  }
  queue<pair<int, int>> Q;
  for (int i = 0; i < n; i++) {
    if (row_diff_cnt[i] == 1) {
      Q.push({i, picture[i][0]});
      row_vis[i] = true;
    }
  }
  for (int j = 0; j < m; j++) {
    if (col_diff_cnt[j] == 1) {
      Q.push({j + n, picture[0][j]});
      col_vis[j] = true;
    }
  }
  vector<Op> solution;
  while (!Q.empty()) {
    int v = Q.front().first;
    int l = Q.front().second;
    Q.pop();
    if (v >= n) {
      col_letter_cnt[v - n][l] = 0;
      col_diff_cnt[v - n] = 0;
      solution.push_back({v - n, 'K', (char)(l + 'A')});
      for (int i = 0; i < n; i++) {
        row_letter_cnt[i][l]--;
        row_diff_cnt[i] -= row_letter_cnt[i][l] == 0;
        if (row_vis[i] || row_diff_cnt[i] != 1)
          continue;
        for (int j = 0; j < 26; j++) {
          if (row_letter_cnt[i][j]) {
            Q.push({i, j});
            break;
          }
        }
        row_vis[i] = true;
      }
    } else {
      solution.push_back({v, 'R', (char)(l + 'A')});
      row_letter_cnt[v][l] = 0;
      row_diff_cnt[v] = 0;
      for (int i = 0; i < m; i++) {
        col_letter_cnt[i][l]--;
        col_diff_cnt[i] -= col_letter_cnt[i][l] == 0;
        if (col_vis[i] || col_diff_cnt[i] != 1)
          continue;
        for (int j = 0; j < 26; j++) {
          if (col_letter_cnt[i][j]) {
            Q.push({i + n, j});
            break;
          }
        }
        col_vis[i] = true;
      }
    }
  }
  reverse(solution.begin(), solution.end());
  cout << solution.size() << '\n';
  for (const Op &op : solution) {
    cout << op << "\n";
  }

  // Check

  // Visualiser visualiser(n, m);
  // for (const Op &op : solution) {
  //   visualiser.Paint(op);
  //   visualiser.Show();
  //   cout << '\n';
  // }

  return 0;
}