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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>
#define ll long long
 
#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 << __LINE__ << ": [" #x "]: ", dump(x)
#else
#define debug(...) 0
#endif
 
int32_t main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	int n, m; cin>>n>>m;
	vector<string> tab(n);
	rep(i, n)cin>>tab[i];
	vector<int> rowCnt(n, 0);
	vector<int> colCnt(m, 0);
	vector<int> prevRow(n, 0);
	vector<int> nextRow(n, 0);
	vector<int> prevCol(m, 0);
	vector<int> nextCol(m, 0);
	vector<bool> colActive(m, true);
	vector<bool> rowActive(n, true);
	prevRow[0] = -1;
	for(int i = 1; i < n; i++){
		prevRow[i] = i-1;
	}
	nextRow[n-1] = -1;
	for(int i= 0; i < n-1; i++){
		nextRow[i] = i+1;
	}
	prevCol[0] = -1;
	for(int i = 1; i < m; i++){
		prevCol[i] = i-1;
	}
	nextCol[m-1] = -1;
	for(int i= 0; i < m-1; i++){
		nextCol[i] = i+1;
	}
	rep(i, n){
		rep(j, m-1){
			if(tab[i][j] != tab[i][j+1])rowCnt[i]++;
		}
	}
	rep(j, m){
		rep(i, n-1){
			if(tab[i][j] != tab[i+1][j])colCnt[j]++;
		}
	}
	debug(colCnt);
	debug(rowCnt);
	queue<int> q;
	vector<pair<int, char>> ans;
	rep(i, n){
		if(rowCnt[i] == 0)q.push((i+1));
	}
	rep(i, m){
		if(colCnt[i] == 0)q.push(-(i+1));
	}
	while(!q.empty()){
		int v = q.front(); q.pop();
		debug(v);
		if(v > 0){
			int row = v-1;
			char c = 0;
			int a = prevRow[row];
			int b = nextRow[row];
			rep(j, m){
				if(colActive[j])c = tab[row][j];
				if(colCnt[j] != 0){
					if(a != -1 && tab[a][j] != tab[row][j]){
						colCnt[j]--;
					}
					if(b != -1 && tab[b][j] != tab[row][j]){
						colCnt[j]--;
					}
					if(a != -1 && b != -1 && tab[a][j] != tab[b][j])colCnt[j]++;
					if(colCnt[j] == 0){
						q.push(-(j+1));
					}
				}
			}
			if(a != -1)nextRow[a] = b;
			if(b != -1)prevRow[b] = a;
			if(c != 0)ans.push_back({v, c});
			rowActive[row] = false;
		}else{
			int col = -v - 1;
			char c = 0;
			int a = prevCol[col];
			int b = nextCol[col];
			rep(i, n){
				if(rowActive[i])c = tab[i][col];
				if(rowCnt[i] != 0){
					if(a != -1 && tab[i][a] != tab[i][col]){
						rowCnt[i]--;
					}
					if(b != -1 && tab[i][b] != tab[i][col]){
						rowCnt[i]--;
					}
					if(a != -1 && b != -1 && tab[i][a] != tab[i][b])rowCnt[i]++;
					if(rowCnt[i] == 0){
						q.push(i + 1);
					}
				}
			}
			if(a != -1)nextCol[a] = b;
			if(b != -1)prevCol[b] = a;
			if(c != 0)ans.push_back({v, c});
			colActive[col] = false;
		}
	}
	reverse(all(ans));
	cout<<sz(ans)<<"\n";
	for(auto p : ans){
		if(p.st > 0){
			cout<<"R "<<p.st<<" "<<p.nd<<"\n";
		}else{
			cout<<"K "<<(-p.st)<<" "<<p.nd<<"\n";
		}
	}
	return 0;
}