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#include<bits/stdc++.h>
#define LL long long
#define LLL __int128
#define uint unsigned
#define ldb long double
#define uLL unsigned long
using namespace std;
const int N=2e3+5;
int n,m;
string s[N];
int vx[N],vy[N],R[N][26],C[N][26];
vector<tuple<char,int,char>>ans;
signed main(){
    cin.tie(0)->sync_with_stdio(0);
    cin>>n>>m;
    for(int i=0;i<n;++i)cin>>s[i];
    for(int i=0;i<n;++i)
        for(int j=0;j<m;++j)
            ++R[i][s[i][j]-'A'],
            ++C[j][s[i][j]-'A'];
    for(int x=n,y=m;x&&y;){
        bool ok=0;
        for(int c=0;!ok&&c<26;++c)
            for(int i=0;i<n;++i)
                if(!vx[i]&&R[i][c]==y){
                    ok=1,--x,vx[i]=1,ans.emplace_back('R',i,'A'+c);
                    for(int j=0;j<m;++j)if(!vy[j])--C[j][s[i][j]-'A'];
                }
        for(int c=0;!ok&&c<26;++c)
            for(int j=0;j<m;++j)
                if(!vy[j]&&C[j][c]==x){
                    ok=1,--y,vy[j]=1,ans.emplace_back('K',j,'A'+c);
                    for(int i=0;i<n;++i)if(!vx[i])--R[i][s[i][j]-'A'];
                }
    }
    reverse(ans.begin(),ans.end());
    cout<<ans.size()<<'\n';
    for(auto [x,y,z]:ans)cout<<x<<' '<<y+1<<' '<<z<<'\n';
    return 0;
}
/*
*/