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#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
 
#define mp make_pair
#define pb push_back
#define ppb pop_back
#define pf push_front
#define ppf pop_front
#define eb emplace_back
#define st first
#define nd second
#define vt vector
#define VAR(__var)  #__var << ": " << __var << " "
#define PAIR(__var) #__var << ": " << __var.first << ", " << __var.second << " "
#define FOR(__var, __start, __end)  for(int __var=__start; __var<__end; ++__var)
#define FORB(__var, __start, __end) for(int __var=__start; __var>__end; --__var)
#define REP(__var, __cnt) for(int __var=0; __var<(__cnt); ++__var)
#define EACH(__var, __x) for(auto __var : __x)
#define maxi(__x, __y) __x = (__x>__y?__x:__y)
#define mini(__x, __y) __x = (__x<__y?__x:__y)
#define all(__var)     (__var).begin(),(__var).end()
#define rall(__var)    (__var).rbegin(),(__var).rend()
#define sz(__var)      (int)(__var).size()

using namespace std;
 
using namespace __gnu_pbds;
template <typename T>
using ord_set = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;

#ifdef DEBUG
template<typename Stream, typename T1, typename T2>
Stream& operator << (Stream& out, pair<T1, T2> a) {return out << "(" << a.st << ", " << a.nd << ")";}
 
template<typename Stream, typename T>
Stream &operator << (Stream& out, T v) {
	out << "{";
	int i = 0;
	for (auto x : v)
		out << x << ((++ i) != sz(v) ? ", " : "");
	return out << "}";
}
 
template<typename... Args>
void dump(Args... x) {((cerr << x << ", "), ...) << '\n';}
 
#define debug(x...) cerr << "[" #x "]: ", dump(x)
#else
#define debug(...) 0
#endif
 
typedef       long long ll;
typedef     long double ld;
typedef   pair<ll, ll> pll;
typedef pair<int, int> pii;

const bool __test_cases = false;
 
const int INF = 1e9+2137;

void solve() {
	int n, m;
	cin >> n >> m;

	queue<tuple<int, int, int>> q;
	vt<vt<bool>> vis(2, vt<bool>(max(n, m), false));
	vt<vt<vt<int>>> left(2, vt<vt<int>>(max(n, m)));
	
	fill(all(left[0]), vt<int>(26, m));
	fill(all(left[1]), vt<int>(26, n));
	FOR(i, 0, n)
		FOR(j, 0, m) {
			char x;
			cin >> x;
			int c = x-'A';
			--left[0][i][c];
			--left[1][j][c];
			if(left[0][i][c] == 0) {
				q.push({0, c, i});
				vis[0][i] = true;
			}
			if(left[1][j][c] == 0) {
				q.push({1, c, j});
				vis[1][j] = true;
			}
		}

	vt<tuple<char, int, char>> res;
	while(!q.empty()) {
		auto [rk, c, x] = q.front();
		q.pop();
		res.pb({(rk==0?'R':'K'), x+1, c+'A'});
		int lim = (rk==0?m:n);
		FOR(i, 0, lim) {
			if(vis[rk^1][i])
				continue;
			FOR(k, 0, 26) {
				if(k == c)
					continue;
				--left[rk^1][i][k];
				if(left[rk^1][i][k] == 0) {
					vis[rk^1][i] = true;
					q.push({rk^1, k, i});
					break;
				}
			}
		}
	}

	reverse(all(res));
	cout << sz(res) << '\n';
	for(auto [a, b, c] : res)
		cout << a << ' ' << b << ' ' << c << '\n';
}

int32_t main() {
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	
	int t=1;
	if(__test_cases)
		cin >> t;
	while(t--) {
		solve();
	}

	return 0;
}