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#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#include <stdio.h>
#include <string.h>
#include <array>
#include <atomic>
#include <chrono>
#include <condition_variable>
#include <forward_list>
#include <future>
#include <initializer_list>
#include <mutex>
#include <random>
#include <ratio>
#include <regex>
#include <scoped_allocator>
#include <system_error>
#include <thread>
#include <tuple>
#include <typeindex>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
#include <cassert>
using namespace std;
 
void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}
template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}

#ifndef ONLINE_JUDGE
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif
#define all(x) x.begin(), x.end()
#define pb push_back
#define ll long long
#define ii pair<int,int>
#define vi vector<int>
#define vll vector<ll>
#define vii vector<ii>
#define vvi vector<vi>
#define fi first
#define se second
#define ld long double
void test_case() {
    int n, m;
    cin >> n >> m;
    vector<vector<char>> tab(n + 1, vector<char>(m + 1));
    vector<vector<int>> erased(n + 1, vi(m + 1, 0));
    vvi row_cnt(n + 1, vi(26, 0)), col_cnt(m + 1, vi(26, 0));

    for(int i = 1; i <= n; i++) {
        for(int j = 1; j <= m; j++) {
            cin >> tab[i][j];
            row_cnt[i][tab[i][j] - 'A']++;
            col_cnt[j][tab[i][j] - 'A']++;
        }
    }
    vi rows_added(n + 1, 0), cols_added(m + 1, 0);
    vvi ans;
    queue<vi> q;
    auto erase_col = [&](int j) {
        for(int i = 1; i <= n; i++) {
            if(erased[i][j])
                continue;
            erased[i][j] = 1;
            row_cnt[i][tab[i][j] - 'A']--;
            col_cnt[j][tab[i][j] - 'A']--;
            int cnt = 0, cur = -1;
            for(int c = 0; c < 26; c++) {
                if(row_cnt[i][c] > 0) {
                    cnt++, cur = c;
                }
            }
            if(cnt == 1 && rows_added[i] == 0) {
                q.push({0, i, cur});
                rows_added[i] = 1;
            }
        }
    };
    auto erase_row = [&](int i) {
        for(int j = 1; j <= m; j++) {
            if(erased[i][j])
                continue;
            erased[i][j] = 1;
            row_cnt[i][tab[i][j] - 'A']--;
            col_cnt[j][tab[i][j] - 'A']--;
            int cnt = 0, cur = -1;
            for(int c = 0; c < 26; c++) {
                if(col_cnt[j][c] > 0) {
                    cnt++, cur = c;
                }
            }
            if(cnt == 1 && cols_added[j] == 0) {
                q.push({1, j, cur});
                cols_added[j] = 1;
            }
        }
    };
    for(int i = 1; i <= n; i++) {
        int cnt = 0, cur = -1;
        for(int c = 0; c < 26; c++) {
            if(row_cnt[i][c] > 0) {
                cnt++, cur = c;
            }
        }
        if(cnt == 1) {
            q.push({0, i, cur});
            rows_added[i] = 1;
        }
    }
    for(int j = 1; j <= m; j++) {
        int cnt = 0, cur = -1;
        for(int c = 0; c < 26; c++) {
            if(col_cnt[j][c] > 0) {
                cnt++, cur = c;
            }
        }
        if(cnt == 1) {
            q.push({1, j, cur});
            cols_added[j] = 1;
        }
    }
    while(q.size() > 0) {
        vi cur = q.front();
        q.pop();
        if(cur[0] == 0) {
            int i = cur[1], c = cur[2];
            if(row_cnt[i][c] > 0) {
                ans.pb({0, i, c});
                erase_row(i);
            }
        } else {
            int j = cur[1], c = cur[2];
            if(col_cnt[j][c] > 0) {
                ans.pb({1, j, c});
                erase_col(j);
            }
        }
    }
    reverse(all(ans));
    cout << ans.size() << "\n";
    for(auto v : ans) {
        cout << (v[0] == 0 ? "R" : "K") << " " << v[1] << " " << (char)(v[2] + 'A') << "\n";
    }
}
int32_t main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
 
    int tc = 1;
    // cin >> tc;
    while(tc--) {
        test_case();
    }
    return 0;
}