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#include <bits/stdc++.h>

#define ll long long
#define fors(u, n, s) for(ll u = (s); u < (n); u++)
#define foru(u, n) fors(u, n, 0)
#define vec vector
#define pb push_back
#define f first
#define s second
#define ir(a, b, x) (((a) <= (x)) && ((x) <= (b)))
#define pint pair<int, int>

using namespace std;

const int N = 3e3;
int n, m;

int arr[N][N];

const int C = 'Z'-'A'+1;

int rows_cnt[N][C];
int cols_cnt[N][C];

bool rows_used[N];
bool cols_used[N];

int main(){
	cin >> m >> n;

	foru(i, m) foru(j, n) {
		char c; cin >> c;
		arr[j][i] = c-'A';
	} 

	foru(i, n) {
		foru(j, m) cols_cnt[i][arr[i][j]]++;
	}

	foru(i, m) {
		foru(j, n) rows_cnt[i][arr[j][i]]++;
	}

	vec<string> out;

	int free_rows = m;
	int free_cols = n;

	while(free_cols != 0 && free_rows != 0){

		start:;

		if(free_cols == 0 || free_rows == 0) break;
		
		foru(i, n){
			if(cols_used[i]) continue;
			int c_cnt = 0;
			int color;
			foru(c, C) if(cols_cnt[i][c]!=0) {c_cnt++; color=c;}
			if(c_cnt == 1){
				out.pb("K " + to_string(i+1) + " " + (char)('A'+color));

				cols_used[i] = true;
				foru(j, m) rows_cnt[j][color]--;
				free_cols--;
				goto start;
			}
		}

		foru(i, m){
			if(rows_used[i]) continue;
			int c_cnt = 0;
			int color;
			foru(c, C) if(rows_cnt[i][c]!=0) {c_cnt++; color=c;}
			if(c_cnt == 1){
				out.pb("R " + to_string(i+1) + " " + (char)('A'+color));

				rows_used[i] = true;
				foru(j, n) cols_cnt[j][color]--;
				free_rows--;
				goto start;
			}
		}
	}

	cout << out.size() << endl;
	for(int i = out.size()-1; i>=0; i--) cout << out[i] << endl;
	
	return 0;
}