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#include<bits/stdc++.h>
using namespace std;
int row[2005][26];
int col[2005][26];
int diff_row[2005];
int diff_col[2005];
char tab[2005][2005];
int main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);
    int a, b;
    cin>>a>>b;
    for(int x = 1; x <= a; x++)
        for(int y = 1; y <= b; y++)
        {
            char c;
            cin>>c;
            tab[x][y] = c;
            row[x][c - 'A']++;
            if(row[x][c - 'A'] == 1)
                diff_row[x]++;
            col[y][c - 'A']++;
            if(col[y][c - 'A'] == 1)
                diff_col[y]++;
        }
    queue<pair<char, int>> q;
    for(int x = 1; x <= a; x++)
        if(diff_row[x] == 1)
            q.push(make_pair('R', x));
    for(int x = 1; x <= b; x++)
        if(diff_col[x] == 1)
            q.push(make_pair('K', x));
    vector<pair<char, pair<int, char>>> out;
    while(!q.empty())
    {
        auto p = q.front();
        q.pop();
        //cout<<"XD "<<p.first<<" "<<p.second<<'\n';
        if(p.first == 'R')
        {
            int lit = 0;
            for(int x = 0; x < 26; x++)
                if(row[p.second][x])
                    lit = x;
            out.push_back({p.first, {p.second, 'A' + lit}});
            for(int y = 1; y <= b; y++)
            {
                if(tab[p.second][y] != '0')
                    if(--col[y][tab[p.second][y] - 'A'] == 0)
                        if(--diff_col[y] == 1)
                            q.push({'K', y});

            }
        }
        else
        {
            int lit = 0;
            for(int x = 0; x < 26; x++)
                if(col[p.second][x])
                    lit = x;
            out.push_back({p.first, {p.second, 'A' + lit}});
            for(int y = 1; y <= a; y++)
            {
                if(tab[y][p.second] != '0')
                    if(--row[y][tab[y][p.second] - 'A'] == 0)
                        if(--diff_row[y] == 1)
                            q.push({'R', y});

            }
        }


    }
    reverse(out.begin(), out.end());
    cout<<out.size()<<'\n';
    for(auto p : out)
        cout<<p.first<<" "<<p.second.first<<" "<<p.second.second<<'\n';
	return 0;
}