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#include<bits/stdc++.h>
 
#define pb push_back
#define pob pop_back
#define eb emplace_back
#define fi first
#define se second
#define turbo ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define mid ((l+r)/2)
#define midLL ((l+r)/2LL)
#define mide ((lo+hi)/2)
#define mideLL ((lo+hi)/2LL)
#define endl '\n'
#define random_shuffle shandom_ruffle
#define lowbit(x) x&(-x)
#define bits(x) __builtin_popcount(x) 
#define mins(se) (*se.begin())
#define maxs(se) (*--se.end())
#define all(x) x.begin(), x.end()
#define log2_floor(i) (i ? __builtin_clzll(1) - __builtin_clzll(i) : -1)
#define siz(cont) ((int)cont.size())
#define each(it, cont) for(auto &it : cont)

using ll = long long;
using pii = std::pair<int, int>;
using pll = std::pair<ll, ll>;
using pli = std::pair<ll, int>;
using pil = std::pair<int, ll>;
using vll = std::vector<pll>;
using vii = std::vector<pii>;
using vi = std::vector<int>;
using vl = std::vector<ll>;
using vvl = std::vector<vl>;
using vvi = std::vector<vi>;
using vvii = std::vector<vii>;
using vli = std::vector<pli>;
using vvli = std::vector<vli>;
using vil = std::vector<pil>;
using vvil = std::vector<vil>;
using vc = std::vector<char>;
using vvc = std::vector<std::vector<char>>;
using vb = std::vector<bool>;
using vvb = std::vector<vb>;

void err() { std::cout << "\n"; fflush(stdout); }
template<class T, class... Ts>
void err(T arg, Ts &... args) {
    std::cout << arg << ' ';
    err(args...);
}

using namespace std;

struct senko {
    char rk;
    int nr;
    char kol;
    senko(char rk, int nr, char kol): rk(rk), nr(nr), kol(kol) {}
};

constexpr int CL = 0;
constexpr int RW = 1;

int n, m;
queue<pii> q;
vector<string> v;
vvi row, col;
vb vrow, vcol;
vector<senko> ans;

bool git(vi &ve) {
    int res = 0;
    for (auto it : ve)
        if (it)
            res++;
    return res == 1;
}

int color(vi &ve) {
    for (int i = 0; i < 26; i++)
        if (ve[i])
            return i;
    return -1;
}

void mcol(int nr) {
    if (git(col[nr]) and !vcol[nr]) {
        vcol[nr] = true;
        q.push({CL, nr});
    }
}

void mrow(int nr) {
    if (git(row[nr]) and !vrow[nr]) {
        vrow[nr] = true;
        q.push({RW, nr});
    }
}

void yrow(int nr) {
    for (int i = 0; i < m; i++)
        if (v[nr][i] != '#') {
            col[i][v[nr][i]-'A']--;
            v[nr][i] = '#';
            mcol(i);
        }
}

void ycol(int nr) {
    for (int i = 0; i < n; i++)
        if (v[i][nr] != '#') {
            row[i][v[i][nr]-'A']--;
            v[i][nr] = '#';
            mrow(i);
        }
}

void add_ans(int co, int nr) {
    char clr = 'A' + (co == RW ? color(row[nr]) : color(col[nr]));
    ans.pb({(co == RW ? 'R' : 'K'), nr+1, clr});
}


signed main() {
    turbo;
    cin >> n >> m;
    v = vector<string>(n);
    row = vvi(n, vi(26));
    col = vvi(m, vi(26));
    vrow = vb(n);
    vcol = vb(m);
    for (auto &it : v)
        cin >> it;

    for (int i = 0; i < n; i++)
        for (int j = 0; j < m; j++) {
            row[i][v[i][j]-'A']++;
            col[j][v[i][j]-'A']++;
        }

    for (int i = 0; i < n; i++)
        mrow(i);
    for (int i = 0; i < m; i++)
        mcol(i);

    while (!q.empty()) {
        auto [co, nr] = q.front();
        q.pop();
        if (color(co == RW ? row[nr] : col[nr]) == -1)
            continue;
        add_ans(co, nr);
        if (co == RW)
            yrow(nr);
        else ycol(nr);
    }
    reverse(all(ans));
    cout << siz(ans) << endl;
    for (auto [a, b, c] : ans)
        cout << a << ' ' << b << ' ' << c << endl;
}