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#include <bits/stdc++.h>
#define MP make_pair
#define PB push_back
#define int long long
#define st first
#define nd second
#define rd third
#define FOR(i, a, b) for(int i =(a); i <=(b); ++i)
#define RE(i, n) FOR(i, 1, n)
#define FORD(i, a, b) for(int i = (a); i >= (b); --i)
#define REP(i, n) for(int i = 0;i <(n); ++i)
#define VAR(v, i) __typeof(i) v=(i)
#define FORE(i, c) for(VAR(i, (c).begin()); i != (c).end(); ++i)
#define ALL(x) (x).begin(), (x).end()
#define SZ(x) ((int)(x).size())
#define __builtin_ctz __builtin_ctzll
#define __builtin_clz __builtin_clzll
#define __builtin_popcount __builtin_popcountll
using namespace std;
template<typename TH> void _dbg(const char* sdbg, TH h) { cerr<<sdbg<<"="<<h<<"\n"; }
template<typename TH, typename... TA> void _dbg(const char* sdbg, TH h, TA... t) {
  while(*sdbg != ',') { cerr<<*sdbg++; } cerr<<"="<<h<<","; _dbg(sdbg+1, t...);
}
#ifdef LOCAL
#define debug(...) _dbg(#__VA_ARGS__, __VA_ARGS__)
#define debugv(x) {{cerr <<#x <<" = "; FORE(itt, (x)) cerr <<*itt <<", "; cerr <<"\n"; }}
#else
#define debug(...) (__VA_ARGS__)
#define debugv(x)
#define cerr if(0)cout
#endif
#define next ____next
#define prev ____prev
#define left ____left
#define hash ____hash
typedef long long ll;
typedef long double LD;
typedef pair<int, int> PII;
typedef pair<ll, ll> PLL;
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<ll> VLL;
typedef vector<pair<int, int> > VPII;
typedef vector<pair<ll, ll> > VPLL;

template<class C> void mini(C&a4, C b4){a4=min(a4, b4); }
template<class C> void maxi(C&a4, C b4){a4=max(a4, b4); }
template<class T1, class T2>
ostream& operator<< (ostream &out, pair<T1, T2> pair) { return out << "(" << pair.first << ", " << pair.second << ")";}
template<class A, class B, class C> struct Triple { A first; B second; C third;
  bool operator<(const Triple& t) const { if (st != t.st) return st < t.st; if (nd != t.nd) return nd < t.nd; return rd < t.rd; } };
template<class T> void ResizeVec(T&, vector<int>) {}
template<class T> void ResizeVec(vector<T>& vec, vector<int> sz) {
  vec.resize(sz[0]); sz.erase(sz.begin()); if (sz.empty()) { return; }
  for (T& v : vec) { ResizeVec(v, sz); }
}
typedef Triple<int, int, int> TIII;
template<class A, class B, class C>
ostream& operator<< (ostream &out, Triple<A, B, C> t) { return out << "(" << t.st << ", " << t.nd << ", " << t.rd << ")"; }
template<class T> ostream& operator<<(ostream& out, vector<T> vec) { out<<"("; for (auto& v: vec) out<<v<<", "; return out<<")"; }
template<class T> ostream& operator<<(ostream& out, set<T> vec) { out<<"("; for (auto& v: vec) out<<v<<", "; return out<<")"; }
template<class L, class R> ostream& operator<<(ostream& out, map<L, R> vec) { out<<"("; for (auto& v: vec) out<<v<<", "; return out<<")"; }

const int N = 2e3 + 5;
const int K = 30;
int row_cnt[N][K];
int col_cnt[N][K];
int row_nonzero[N], col_nonzero[N];

struct Op {
  int is_row;
  int ind;
  int col;
};
int32_t main() {

  ios_base::sync_with_stdio(0);
  cout << fixed << setprecision(10);
  cerr << fixed << setprecision(10);
  cin.tie(0);
  //double beg_clock = 1.0 * clock() / CLOCKS_PER_SEC;
  
  int n, m;
  cin>>n>>m;
  
  vector<VI> board(n + 2, VI(m + 2));
  RE (i, n) {
    RE (j, m) {
      char c;
      cin>>c;
      int ziom = c - 'A' + 1;
      board[i][j] = ziom;
      if (row_cnt[i][ziom] == 0) {
        row_nonzero[i]++;
      }
      if (col_cnt[j][ziom] == 0) {
        col_nonzero[j]++;
      }
      row_cnt[i][ziom]++;
      col_cnt[j][ziom]++;
    }
  }
  vector<Op> ops;
  VPII que;
  RE (i, n) {
    if (row_nonzero[i] == 1) {
      que.PB({i, 1});
      ops.PB({1, i, board[i][1]});
    }
  }
  RE (j, m) {
    if (col_nonzero[j] == 1) {
      que.PB({j, 2});
      ops.PB({0, j, board[1][j]});
    }
  }
  for (int ii = 0; ii < SZ(que); ii++) {
    if (que[ii].nd == 1) {
      int i = que[ii].st;
      RE (j, m) {
        col_cnt[j][board[i][j]]--;
        if (col_cnt[j][board[i][j]] == 0) {
          col_nonzero[j]--;
          if (col_nonzero[j] == 1) {
            RE (k, 26) {
              if (col_cnt[j][k]) {
                ops.PB({0, j, k});
                break;
              }
            }
            que.PB({j, 2});
          }
        }
      }
    } else {
      int j = que[ii].st;
      RE (i, n) {
        row_cnt[i][board[i][j]]--;
        if (row_cnt[i][board[i][j]] == 0) {
          row_nonzero[i]--;
          if (row_nonzero[i] == 1) {
            RE (k, 26) {
              if (row_cnt[i][k]) {
                ops.PB({1, i, k});
                break;
              }
            }
            que.PB({i, 1});
          }
        }
      }
    }
  }
  assert(SZ(que) == n + m);
  assert(SZ(ops) == n + m);
  
  cout<<n + m<<endl;
  reverse(ALL(ops));
  for (auto op : ops) {
    if (op.is_row) {
      cout<<"R ";
    } else {
      cout<<"K ";
    }
    cout<<op.ind<<" ";
    cout<<char('A' + op.col - 1)<<"\n";
  }

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  return 0;
}