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#include <bits/stdc++.h>
using namespace std;
#define f first
#define s second

constexpr int maxn = 2002;
int n, m, k[maxn][30], r[maxn][30];
char tab[maxn][maxn], alf[] = "#ABCDEFGHIJKLMNOPQRSTUVWXYZ";
queue<pair<char,int> > kan;
vector<pair<pair<char,int>, char> > mv;

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	cin >> n >> m;
	for (int i = 1; i <= n; ++i){
		for (int j = 1; j <= m; ++j){
			cin >> tab[i][j];
			++r[i][tab[i][j]-'A'+1];
			++k[j][tab[i][j]-'A'+1];
			if (r[i][tab[i][j]-'A'+1] == 1)
				++r[i][0];
			if (k[j][tab[i][j]-'A'+1] == 1)
				++k[j][0];
		}
	}
	for (int i = 1; i <= n; ++i)
		if (r[i][0] == 1)
			kan.push({'R',i});
	for (int i = 1; i <= m; ++i)
		if (k[i][0] == 1)
			kan.push({'K',i});

	char c;
	while (!kan.empty()){
		auto u = kan.front();
		kan.pop();
		if (u.f == 'R'){
			if (r[u.s][0] == 0)
				continue;
			for (int i = 1; i <= 'Z'-'A'+1; ++i){
				if (r[u.s][i]){
					c = alf[i];
				}
				r[u.s][i] = 0;
			}
			mv.push_back({{'R',u.s},c});
			r[u.s][0] = 0;
			for (int i = 1; i <= m; ++i){
				if (k[i][c-'A'+1]){
					--k[i][c-'A'+1];
					if (k[i][c-'A'+1] == 0){
						--k[i][0];
						if (k[i][0] == 1)
							kan.push({'K',i});
					}
				}
			}
		}
		if (u.f == 'K'){
			if (k[u.s][0] == 0)
				continue;
			for (int i = 1; i <= 'Z'-'A'+1; ++i){
				if (k[u.s][i]){
					c = alf[i];
				}
				k[u.s][i] = 0;
			}
			mv.push_back({{'K',u.s},c});
			k[u.s][0] = 0;
			for (int i = 1; i <= n; ++i){
				if (r[i][c-'A'+1]){
					--r[i][c-'A'+1];
					if (r[i][c-'A'+1] == 0){
						--r[i][0];
						if (r[i][0] == 1)
							kan.push({'R',i});
					}
				}
			}
		}
	}
	cout << mv.size() << '\n';
	while (!mv.empty()){
		cout << mv[mv.size()-1].f.f << ' ' << mv[mv.size()-1].f.s << ' ' << mv[mv.size()-1].s << '\n';
		mv.pop_back();
	}
}