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//Krzysztof Pieprzak
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
typedef unsigned int uint;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef pair<int,int> pii;
typedef pair<long long, long long> pll;
typedef vector<pii> vpii;
typedef vector<pll> vpll;

#define Size(x) (int)x.size()
#define VAR(v,n) auto v = (n)
#define FOR(i,a,b) for(VAR(i,a); i < (b); ++i)
#define FORE(i,a,b) for(VAR(i,a); i <= (b); ++i)
#define FORREV(i,a,b) for(VAR(i,b); i >= (a); --i)
#define FORSTEP(i,a,b,step) for(VAR(i,a); i < (b); i += (step))
#define FOREACH(i,c) for(auto i : (c))
#define FOREACHS(i,c,n) for(VAR(i,&(c)[0]); i-(c)<(n); ++i)
#define ALL(x) x.begin(),x.end()
#define CLEAR(t) memset(t, 0, sizeof(t))
#define F first
#define S second
#define MP make_pair
#define PUB push_back
#define POB pop_back
#define pieprzu ios_base::sync_with_stdio(0);

const int    INF = 1000000001;
const double EPS = 10e-9;

const int MAXN = 2000;

char t[MAXN + 5][MAXN + 5];

int rowDistinctColors[MAXN + 5];
int columnDistinctColors[MAXN + 5];

int rowColorCounters[MAXN + 5][100];
int columnColorCounters[MAXN + 5][100];

int rowColors[MAXN + 5];
int columnColors[MAXN + 5];

queue<pair<char, int>> q;

vector<pair<char, pair<int, char>>> operations;

void rob(int test) {
    int n, m;
    scanf("%d %d", &n, &m);

    FOR (i, 0, n) {
        scanf("%s", t[i]);
    }

    FOR (i, 0, n) {
        FOR (j, 0, m) {
            if (rowColorCounters[i][t[i][j]] == 0) {
                ++rowDistinctColors[i];
                rowColors[i] += t[i][j] - 'A';
            }
            ++rowColorCounters[i][t[i][j]];
        }

        if (rowDistinctColors[i] == 1) {
            q.push(MP('R', i));
        }
    }

    FOR (i, 0, m) {
        FOR (j, 0, n) {
            if (columnColorCounters[i][t[j][i]] == 0) {
                ++columnDistinctColors[i];
                columnColors[i] += t[j][i] - 'A';
            }
            ++columnColorCounters[i][t[j][i]];
        }

        if (columnDistinctColors[i] == 1) {
            q.push(MP('C', i));
        }
    }

    while (!q.empty()) {
        pair<char, int> e = q.front(); q.pop();
        if (e.F == 'R') {
            char color = rowColors[e.S] + 'A';
            operations.PUB(MP('R', MP(e.S + 1, color)));
            FOR (i, 0, m) {
                if (columnColorCounters[i][color] > 0) {
                    --columnColorCounters[i][color];
                    if (columnColorCounters[i][color] == 0) {
                        --columnDistinctColors[i];
                        columnColors[i] -= color - 'A';
                        if (columnDistinctColors[i] == 1) {
                            q.push(MP('C', i));
                        }
                    }
                }
            }
        } else {
            char color = columnColors[e.S] + 'A';
            operations.PUB(MP('K', MP(e.S + 1, color)));
            FOR (i, 0, n) {
                if (rowColorCounters[i][color] > 0) {
                    --rowColorCounters[i][color];
                    if (rowColorCounters[i][color] == 0) {
                        --rowDistinctColors[i];
                        rowColors[i] -= color - 'A';
                        if (rowDistinctColors[i] == 1) {
                            q.push(MP('R', i));
                        }
                    }
                }
            }
        }
    }

    n = Size(operations);
    printf("%d\n", n);
    FORREV (i, 0, n - 1) {
        printf("%c %d %c\n", operations[i].F, operations[i].S.F, operations[i].S.S);
    }
}

int main() {
    int test = 1;
    //scanf("%d", &test);

    FORE (i, 1, test) rob(i);

    return 0;
}