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#include <bits/stdc++.h>
using namespace std;

#define fwd(i, a, n) for (int i = (a); i < (n); i ++)
#define rep(i, n) fwd(i, 0, n)
#define all(X) begin(X), end(X)
#define sz(X) ((int)X.size())
#define st first
#define nd second
#define pii pair<int, int>
#define vi vector<int>

#ifdef LOC
auto &operator << (auto &out, pair<auto, auto> a) {
	return out << "(" << a.st << ", " << a.nd << ")";
}

auto &operator << (auto &out, auto a) {
	out << "{";
	for (auto b : a)
		out << b << ", ";
	return out << "}";
}

void dump(auto... x) { ((cerr << x << ", "), ...) << '\n'; }

#define debug(x...) cerr << "[" #x "]: ", dump(x)
#else
#define debug(...) 0
#endif

const int ALF = 26;

int32_t main() {
   	ios_base::sync_with_stdio(0), cin.tie(0);
	int n, m;
	cin >> n >> m;
	vector<string> s(n);
	vector<vi> rowC(n, vi(ALF, 0));
	vector<vi> colC(m, vi(ALF, 0));
	vi rowF(n, 0);
	vi colF(m, 0);
	rep(i, n) {
		cin >> s[i];
		rep(j, m) {
			rowC[i][s[i][j] - 'A'] += 1;
			colC[j][s[i][j] - 'A'] += 1;
		}
	}
	vi rowVis(n, 0);
	vi colVis(m, 0);
	vector<pii> ready;
	vector<array<int, 3> > ans;
	rep(i, n) {
		rep(j, ALF)
			if (rowC[i][j])
				rowF[i] += 1;
		if (rowF[i] == 1)
			ready.push_back({0, i});
	}
	rep(i, m) {
		rep(j, ALF)
			if (colC[i][j])
				colF[i] += 1;
		if (colF[i] == 1)
			ready.push_back({1, i});
	}
	while (sz(ready)) {
		auto [rc, id] = ready.back();
		ready.pop_back();
		if (rc == 0) {
			if (rowVis[id])
				continue;
			rowVis[id] = 1;
			int cid = 0;
			rep(i, ALF)
				if (rowC[id][i])
					cid = i;
			ans.push_back({rc, id, cid});
			rep(i, m)
				if (s[id][i] == ('A' + cid)) {
					if ((--colC[i][cid]) == 0) {
						if ((--colF[i]) <= 1) {
							ready.push_back({1, i});
						}
					}
					s[id][i] = '.';
					rowC[id][cid] -= 1;
				}
		} else {
			if (colVis[id])
				continue;
			colVis[id] = 1;
			int cid = 0;
			rep(i, ALF)
				if (colC[id][i])
					cid = i;
			ans.push_back({rc, id, cid});
			rep(i, n)
				if (s[i][id] == ('A' + cid)) {
					if ((--rowC[i][cid]) == 0) {
						if ((--rowF[i]) <= 1) {
							ready.push_back({0, i});
						}
					}
					s[i][id] = '.';
					colC[id][cid] -= 1;
				}
		}
	}
	reverse(all(ans));
	cout << sz(ans) << '\n';
   	for (auto [rc, id, ch] : ans) {
		if (rc == 0)
			cout << "R ";
		else
			cout << "K ";
		cout << id + 1 << ' ';
		cout << (char)('A' + ch) << '\n';
	}
	//debug(s);
	return 0;
}