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#include <bits/stdc++.h>

using namespace std;

typedef unsigned uint;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ldbl;
typedef pair<int, int> pii;
typedef pair<uint, uint> puu;
typedef pair<ll, ll> pll;
typedef pair<ull, ull> pull;
typedef pair<double, double> pdd;
typedef vector<int> vi;
typedef vector<uint> vu;
typedef vector<ll> vll;
typedef vector<ull> vull;
typedef vector<pii> vpii;
typedef vector<puu> vpuu;
typedef vector<pll> vpll;
typedef vector<pull> vpull;
typedef vector<string> vstr;
typedef vector<double> vdbl;
typedef vector<ldbl> vldbl;
#define pb push_back
#define ppb pop_back
#define pfr push_front
#define ppfr pop_front
#define emp emplace
#define empb emplace_back
#define be begin
#define rbe rbegin
#define all(x) (x).be(), (x).end()
#define rall(x) (x).rbe(), (x).rend()
#define fir first
#define sec second
#define mkp make_pair
#define brif(cond) if (cond) break
#define ctif(cond) if (cond) continue
#define retif(cond) if (cond) return
void canhazfast() {ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);}
template<typename T> T gcd(T a, T b) {return b ? gcd(b, a%b) : a;}
template<typename T> T extgcd(T a, T b, T &x, T &y)
{
    T x0 = 1, y0 = 0, x1 = 0, y1 = 1;
    while (b) {
        T q = a/b; a %= b; swap(a, b);
        x0 -= q*x1; swap(x0, x1);
        y0 -= q*y1; swap(y0, y1);
    }
    x = x0; y = y0; return a;
}
int ctz(uint x) {return __builtin_ctz(x);}
int ctzll(ull x) {return __builtin_ctzll(x);}
int clz(uint x) {return __builtin_clz(x);}
int clzll(ull x) {return __builtin_clzll(x);}
int popcnt(uint x) {return __builtin_popcount(x);}
int popcntll(ull x) {return __builtin_popcountll(x);}
int bsr(uint x) {return 31^clz(x);}
int bsrll(ull x) {return 63^clzll(x);}

#define MX 2048

vpii ans;
char a[MX][MX];
int fr[MX][32], fc[MX][32];
int dr[MX], dc[MX];
int vr[MX], vc[MX];

void do_row(int n, int m, int i)
{
    for (int j = 0; j < m; ++j) {
        ctif(a[i][j] == '*');
        int v = a[i][j]-'A';
        a[i][j] = '*';
        if (--fc[j][v] == 0) {
            vc[j] ^= v;
            if (--dc[j] == 1) ans.empb(j+n, vc[j]);
        }
    }
}

void do_col(int n, int m, int j)
{
    for (int i = 0; i < n; ++i) {
        ctif(a[i][j] == '*');
        int v = a[i][j]-'A';
        a[i][j] = '*';
        if (--fr[i][v] == 0) {
            vr[i] ^= v;
            if (--dr[i] == 1) ans.empb(i, vr[i]);
        }
    }
}

int main()
{
    canhazfast();

    int n, m;

    cin >> n >> m;
    for (int i = 0; i < n; ++i) {
        cin >> a[i];
        for (int j = 0; j < m; ++j) {
            int v = a[i][j]-'A';
            ++fr[i][v];
            ++fc[j][v];
        }
    }
    for (int i = 0; i < n; ++i) {
        for (int v = 0; v < 26; ++v) {
            if (fr[i][v]) {
                ++dr[i];
                vr[i] ^= v;
            }
        }
        if (dr[i] == 1) ans.empb(i, vr[i]);
    }
    for (int j = 0; j < m; ++j) {
        for (int v = 0; v < 26; ++v) {
            if (fc[j][v]) {
                ++dc[j];
                vc[j] ^= v;
            }
        }
        if (dc[j] == 1) ans.empb(j+n, vc[j]);
    }
    for (size_t i = 0; i < ans.size(); ++i) {
        int x = ans[i].fir;
        if (x < n) do_row(n, m, x);
        else do_col(n, m, x-n);
    }
    cout << ans.size() << '\n';
    while (ans.size()) {
        int x, v;
        tie(x, v) = ans.back();
        ans.ppb();
        if (x < n) cout << "R " << x+1;
        else cout << "K " << x-n+1;
        cout << ' ' << char(v+'A') << '\n';
    }

    return 0;
}