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#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <chrono>
#include <cmath>
#include <complex>
#include <cstring>
#include <functional>
#include <iomanip>
#include <iostream>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <vector>
#include <climits>
using namespace std;
 
using ll = long long;
using ul = unsigned long long;
using db = long double;
using pi = pair<int, int>;
using vi = vector<int>;
using vl = vector<ll>;
using vpi = vector<pi>;
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define x first
#define y second

template<class T> using V = vector<T>; 
template<class T, size_t SZ> using AR = array<T,SZ>; 

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define each(a,x) for (auto& a: x)
 
#define sz(x) int((x).size())
#define all(x) (x).begin(), (x).end()
#define rep(i,a,b) for(int i = (a); i < (b); i++)
#define per(i,a,b) for(int i = (b) - 1; i >= (a); i--)

#ifdef LOCAL 
template<class A, class B> auto& operator<<(auto &o, pair<A, B> p) { return o << '(' << p.x << ", " << p.y << ')'; }
auto& operator<<(auto& o, auto a) {
    o << "{";
    for (auto b : a) o << b << ", ";
    return o << "}";
}
void dump(auto... x) { ((cerr << x << ", "), ...) << "\n"; }
#define debug(x...) cerr << "[" #x "]: ", dump(x)
#else
#define debug(...) ;
#endif

template<class T> bool ckmin(T& a, const T& b) { return b < a ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { return a < b ? a = b, 1 : 0; }
template<class T> int lwb(V<T>& a, const T& b) { return int(lb(all(a),b)-bg(a)); }
template<class T> int upb(V<T>& a, const T& b) { return int(ub(all(a),b)-bg(a)); }
template<class T> void remDup(vector<T>& v) { sort(all(v)); v.erase(unique(all(v)),end(v)); }

const int N = 2064;
string a[N];

struct counter {
    int val[26];
    int total = 0;
    void add(char c) { if (val[c-'A']++ == 0) total++; }
    void del(char c) { if (--val[c-'A'] == 0) total--; }
    bool unic() { return total == 1; }
    int c() { rep(i,0,26) if (val[i]) return 'A'+i; return 'A'; }
};

counter row[N], col[N];
bool done_row[N], done_col[N];

signed main() {
    ios_base::sync_with_stdio(false); cin.tie(nullptr);

    int n, m;
    cin >> n >> m;
    rep(i,0,n) {
        cin >> a[i];
        rep(j,0,m) {
            row[i].add(a[i][j]);
            col[j].add(a[i][j]);
        }
    }

    queue<pair<bool, int>> q;

    rep(i,0,n) {
        if (row[i].unic()) {
            done_row[i] = true;
            q.push({0, i});
        }
    }
    rep(i,0,m) {
        if (col[i].unic()) {
            done_col[i] = true;
            q.push({1, i});
        }
    }

    vector<tuple<char,int,char>> res;

    while (!q.empty()) {
        auto [type, idx] = q.front();
        q.pop();
        if (type == false) {
            res.eb('R', idx+1, row[idx].c());
            rep(j,0,m) {
                if (done_col[j]) continue;
                col[j].del(a[idx][j]);
                if (col[j].unic()) {
                    done_col[j] = true;
                    q.push({1, j});
                }
            }
        }
        else {
            res.eb('K', idx+1, col[idx].c());
            rep(i,0,n) {
                if (done_row[i]) continue;
                row[i].del(a[i][idx]);
                if (row[i].unic()) {
                    done_row[i] = true;
                    q.push({0, i});
                }
            }
        }
    }

    assert(sz(res) == n + m);
    reverse(all(res));

    cout << sz(res) << '\n';

    for (auto [x,y,z] : res) {
        cout << x << " " << y << " " << z << '\n';
    }

    return 0;
}