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#include <iostream>
#include <vector>
#include <queue>
#define nl '\n'

using namespace std;

struct paint{
	char type; int pos; int color;
};

int rows[2001][26], cols[2001][26];
vector<paint> moves;
queue<paint> q;

int n, m;

int good(int arr[])
{
	int existent = -1;
	for(int c = 0; c <= 25; c++){
		//cerr<<arr[c]<<' ';
		if(arr[c]){
			if(existent != -1){
				existent = -1;
				break;
			};
			existent = c;
		}
	}
	//cerr<<nl;
	return existent;
}

int main()
{
	cin.tie(0)->sync_with_stdio(0);
	cin>>n>>m;
	for(int i=1; i<=n; i++){
		for(int j=1; j<=m; j++){
			char c;
			cin>>c;
			rows[i][c-'A']++;
			cols[j][c-'A']++;
		}
	}
	for(int i=1; i<=n; i++){
		int color = good(rows[i]);
		if(color != -1){
			paint h = {'R', i, color};
			q.push(h);
		}
	}
	for(int i=1; i<=m; i++){
		int color = good(cols[i]);
		if(color != -1){
			paint h = {'K', i, color};
			q.push(h);
		}
	}
	int rozp_count = 0;
	while(q.size()){
		rozp_count++;
		auto [t, ind, col] = q.front();
		//cerr<<t<<' '<<ind<<' '<<col<<nl;
		q.pop();
		if(t=='R'){
			if(good(rows[ind]) == -1) continue;
			rows[ind][col] = 0; 
			for(int i=1; i<=m; i++){
			rozp_count++;
				if(cols[i][col]) cols[i][col]--;
				int color = good(cols[i]);
				//cerr<<i<<' '<<color<<nl;
				if(color != -1){
					paint h = {'K', i, color};
					q.push(h);
				}	
			}
		}
		if(t=='K'){
			if(good(cols[ind]) == -1) continue;
			cols[ind][col] = 0; 
			for(int i=1; i<=n; i++){
				if(rows[i][col]) rows[i][col]--;
				int color = good(rows[i]);
				//cerr<<i<<' '<<color<<nl;
				if(color != -1){
					paint h = {'R', i, color};
					q.push(h);
				}
			}
		}
		moves.push_back({t, ind, col});
	}
	cout<<moves.size()<<nl;
	while(moves.size()){
		auto [t, ind, col] = moves.back();
		moves.pop_back();
		cout<<t<<' '<<ind<<' '<<(char)(col+'A')<<nl;
	}
	//cerr<<rozp_count<<nl;
	return 0;
}