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#include <bits/stdc++.h>
using namespace std;
 
#ifdef DEBUG
auto &operator<<(auto &o, pair<auto, auto> p) {
    return o << "()" << p.first << ", " << p.second <<")";
}
auto operator<<(auto &o, auto x)-> decltype(x.end(), o) {
    o << "{";int i = 0;
    for(auto e : x) o << ", "+!i++<<e;
    return o <<"}";
}
#define debug(x...) cerr << "["#x"]: ",[](auto...$){((cerr<<$<<"; "),...)<<endl;}(x)
#else
#define debug(...) {}
#endif
 
#define all(x) x.begin(), x.end()
#define pb push_back
#define fi first
#define se second
typedef pair <int, int> pii;


struct op {
    char type, letter;
    int id;

    op() {}
    op(char t, int i, char n) {
        type = t;
        id = i;
        letter = n;
    }

    void display() {
        cout<<type<<' '<<id<<' '<<letter<<'\n'; 
    }
};


constexpr int N = 2e3+7;
char T[N][N];
int cnt[2][N][26];
bool done[2][N];
set <pii> big[2][N];

void test() {
    int n, m; cin>>n>>m;
    
    for (int i=1; i<=n; ++i) {
        for (int j=1; j<=m; ++j) {
            char x;
            cin>>x;
            T[i][j] = x;
            int y = x-'A';
            cnt[0][i][y]++;
            cnt[1][j][y]++;
        }
    }
    for (int i=1; i<=n; ++i) {
        for (int j=0; j<26; ++j) {
            if (cnt[0][i][j] > 0)
                big[0][i].insert({cnt[0][i][j], j});
        }
    }
    for (int i=1; i<=m; ++i) {
        for (int j=0; j<26; ++j) {
            if (cnt[1][i][j] > 0)
                big[1][i].insert({cnt[1][i][j], j});
        }
    }
    debug("xd");
    
    vector <op> res;
    int left[2] = {m, n};

    for (int i=0; i<n+m; ++i) {
        debug("---------------------", i);
        bool f = false;
        int mxa = 0, mx = 0, ml = 0;
        for (int j=1; j<=n; ++j) {
            if (!done[0][j]) {
                int cn = 0;
                for (int k=0; k<26; ++k) {
                    if (cnt[0][j][k] > 0) {cn++; ml = k;}
                }
                if (cn == 1) {
                    f = true;
                    mx = j;
                    break;
                }
            }
        }
        if (!f) {
            for (int j=1; j<=m; ++j) {
                if (!done[1][j]) {
                    int cn = 0;
                    for (int k=0; k<26; ++k) {
                        if (cnt[1][j][k] > 0) {cn++; ml = k;}
                    }
                    if (cn == 1) {
                        f = true;
                        mxa = 1;
                        mx = j;
                        break;
                    }
                }
            }
        }
        if (!f) break;

        res.emplace_back((mxa ? 'K' : 'R'), mx, ml+'A');

        int ub = (mxa == 1 ? n : m);
        int pop = mxa^1;
        left[pop]--;
        for (int p=1; p<=ub; ++p) {
            int let = (pop == 0 ? T[p][mx] : T[mx][p]) - 'A';
            if (!done[pop][p]) {
                cnt[pop][p][let]--;
            }
        }
        done[mxa][mx] = true;
    }
    cout<<res.size()<<'\n';
    reverse(all(res));
    for (auto x : res) {
        x.display();
    }
}
 
signed main() {
  ios_base::sync_with_stdio(0); cin.tie(0);
  int t = 1;
//    cin>>t;
  while (t--) {
    test();
  }
}