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#include <bits/stdc++.h>

using namespace std;

int x, y;
vector<vector<int>> field, dp1, dp2;
vector<string> moves;
set<int> dne;

bool isGood(vector<int>& tmp, int cn, bool pos){
    if(dne.find(cn + x * (int)(!pos)) != dne.end()) return 0;
    int cnt = 0;
    for(int i = 0; i<tmp.size(); i++){
        if(tmp[i]>0) cnt++;
    }
    return (cnt<2);
}

char getColor(int cn, bool pos){
    if(pos){
        for(int i = 0; i<y; i++){
            if(field[cn][i]!=-1) return (char)(field[cn][i] + 'A');   
        }
    }
    else{
        for(int i = 0; i<x; i++){
            if(field[i][cn]!=-1) return (char)(field[i][cn] + 'A');   
        }
    }

    return 'A';
}

void removeEdge(int cn, bool pos){
    dne.insert(cn + x * (int)(!pos));
    if(pos){
        for(int i = 0; i<y; i++){
            //cout<<"upd: "<<cn<<" x "<<i<<endl;
            if(field[cn][i]!=-1) dp2[i][field[cn][i]]--;   
            field[cn][i] = -1;
        }
    }
    else{
        for(int i = 0; i<x; i++){
            //cout<<"upd: "<<i<<" x "<<cn<<endl;
            if(field[i][cn] != -1) dp1[i][field[i][cn]]--;
            field[i][cn] = -1;  
        }
    }
}

int main(){
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    cin>>y>>x;

    field.assign(x, {});
    dp1.assign(x, {});
    dp2.assign(y, {});

    for(int i = 0; i<x; i++)
        dp1[i].assign(30, 0);
    
    for(int i = 0; i<y; i++)
        dp2[i].assign(30, 0);

    for(int i = 0; i<x; i++)
        field[i].assign(y, 0);

    char a;
    for(int i = 0; i<y; i++){
        for(int j = 0; j<x; j++){
            cin>>a;
            int val = ((int)a-(int)'A');
            field[j][i] = val;
            dp1[j][val]++;
            dp2[i][val]++;
        }
    }

    int done = 0;
    while(done<x+y){
        //cout<<done<<endl;
        for(int i = 0; i<x; i++){
            if(isGood(dp1[i], i, 1)){
                moves.push_back("K "+ to_string(i+1)+ " ");
                moves.back().push_back(getColor(i, 1));
                removeEdge(i, 1);
                done++;
            }
        }
        for(int i = 0; i<y; i++){
            if(isGood(dp2[i], i, 0)){
                moves.push_back("R "+ to_string(i+1)+ " ");
                moves.back().push_back(getColor(i, 0));
                removeEdge(i, 0);
                done++;
            }
        }
    }

    reverse(moves.begin(), moves.end());

    cout<<moves.size()<<"\n";
    for(string move : moves){
        cout<<move<<"\n";
    }

    return 0;
}