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#include <iostream>
#include <vector>
#include <queue>
#include <stack>

using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    int n, m;
    cin >> n >> m;
    vector<vector<int>> wiersze (26, vector<int> (n));
    vector<vector<int>> kolumny (26, vector<int> (m));
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            char a;
            cin >> a;
            wiersze[int(a)-65][i]++;
            kolumny[int(a)-65][j]++;
        }
    }
    vector<int> Wkolory(n);
    vector<int> Kkolory(m);
    queue<pair<bool, pair<int, int>>> usuwanie;
    stack<pair<bool, pair<int, int>>> output;

    for (int i = 0; i < n; i++) {
        int l = 0;
        int c;
        for (int j = 0; j < 26; j++) {
            if (wiersze[j][i] != 0) {
                l++;
                c = j;
            }
        }
        Wkolory[i] = l;
        // wiersz(rzad) = 0, kolumna = 1
        if (l == 1) {
            usuwanie.push(make_pair(0, make_pair(i, c)));
        }
    }
    for (int i = 0; i < m; i++) {
        int l = 0;
        int c;
        for (int j = 0; j < 26; j++) {
            if (kolumny[j][i] != 0) {
                l++;
                c = j;
            }
        }
        Kkolory[i] = l;
        // wiersz(rzad) = 0, kolumna = 1
        if (l == 1) {
            usuwanie.push(make_pair(1, make_pair(i, c)));
        }
    }

    while (!usuwanie.empty()) {
        output.push(usuwanie.front());
        if (usuwanie.front().first == 0) {
            for (int i = 0; i < m; i++) {
                kolumny[usuwanie.front().second.second][i]--;
                if (kolumny[usuwanie.front().second.second][i] == 0) {
                    Kkolory[i]--;
                    if (Kkolory[i] == 1) {
                        for (int j = 0; j < 26; j++) {
                            if (kolumny[j][i] != 0) {
                                usuwanie.push(make_pair(1, make_pair(i, j)));
                                break;
                            }
                        }
                    }
                }
            }
        } else {
            for (int i = 0; i < n; i++) {
                wiersze[usuwanie.front().second.second][i]--;
                if (wiersze[usuwanie.front().second.second][i] == 0) {
                    Wkolory[i]--;
                    if (Kkolory[i] == 1) {
                        for (int j = 0; j < 26; j++) {
                            if (wiersze[j][i] != 0) {
                                usuwanie.push(make_pair(0, make_pair(i, j)));
                                break;
                            }
                        }
                    }
                }
            }
        }
        usuwanie.pop();
    }

    cout << output.size() << endl;
    while (!output.empty()) {
        if (output.top().first == 0) {
            cout << "R ";
        } else {
            cout << "K ";
        }
        cout << output.top().second.first + 1 << " " << char(output.top().second.second+65) << endl;
        output.pop();
    }

    return 0;
}