#include <bits/stdc++.h>
#include <iostream>
// #define int long long
#define ld long double
#define endl "\n"
#define fastio ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define pb push_back
#define mp(a,b) make_pair(a,b)
#define ms(v,x) memset(v,x,sizeof(v))
#define all(v) v.begin(),v.end()
#define ff first
#define ss second
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define per(i, a, b) for(int i = b-1; i>=a ; i--)
#define trav(a, x) for(auto& a : x)
#define allin(a , x) for(auto a : x)
#define Unique(v) sort(all(v)),v.erase(unique(all(v)),v.end());
#define sz(v) ((int)v.size())
using namespace std;
typedef vector<int> vi;
#define y1 abacaba
//#define left oooooopss
#define db(x) cerr << #x <<" == "<<x << endl;
#define db2(x,y) cerr<<#x <<" == "<<x<<", "<<#y<<" == "<<y<<endl;
#define db3(x,y,z) cerr << #x<<" == "<<x<<", "<<#y<<" == "<<y<<", "<<#z<<" == "<<z<<endl;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<ll> vl;
// std::mt19937_64 rng64((int) std::chrono::steady_clock::now().time_since_epoch().count());
std::mt19937 rng(
  
//  (int) std::chrono::steady_clock::now().time_since_epoch().count()
   1239010
);
ll cdiv(ll a, ll b) { return a/b+((a^b)>0&&a%b); } // divide a by b rounded up
ll fdiv(ll a, ll b) { return a/b-((a^b)<0&&a%b); } // divide a by b rounded down
//inline ll mod(ll n, ll m ){ ll ret = n%m; if(ret < 0) ret += m; return ret; }
ll gcd(ll a, ll b){return (b == 0LL ? a : gcd(b, a%b));}
ll exp(ll b,ll e,ll m){
    b%=m;
    ll ans = 1;
    for (; e; b = b * b % m, e /= 2)
        if (e & 1) ans = ans * b % m;
    return ans;
}
// debug:
template<class T>void print_vector(vector<T> &v){
    rep(i,0,sz(v))cout<<v[i]<<" \n"[i==sz(v)-1];
}
void dbg_out() {cerr << endl; }
template<typename Head, typename ... Tail> void dbg_out(Head H,Tail... T){
    cerr << ' ' << H;
    dbg_out(T...);
}
#ifdef LOCAL
#define dbg(...) cerr << "(" << #__VA_ARGS__ << "):", dbg_out(__VA_ARGS__), cerr << endl
#else
#define dbg(...) 42
#endif
//

const int N = 2050;
string s[N];
bool can[N][N][2][2];
bool vis[N][N][2][2];

struct nx{
    int i , j , l , r;
} nxt[N][N][2][2];

int n, m;
bool A[N] , B[N];
bool dp(int i ,int j , int l , int r){
    if(i >= n || j >= m)
        return 0;
    if(s[i][j] == '#')
        return 0;
    if(vis[i][j][l][r])
        return can[i][j][l][r];
    vis[i][j][l][r] = true;
    char p = s[i][j];
    bool flipped = l ^ r;

    if((p == '@' && !flipped) || (p == 'O' && flipped)){
        if(!l){
        bool ff = dp(i,j,1,r);
        can[i][j][l][r] |= ff;
        if(ff)
            nxt[i][j][l][r] = {i,j,1,r};
        }
        if(!r){
            bool ff = dp(i,j,l,1);
            can[i][j][l][r] |= ff;
            if(ff)
                nxt[i][j][l][r] = {i,j,l,1};
        }   
    }
    else{
        bool a = dp(i+1,j,0,r);
        bool b = dp(i,j+1,l,0);
        if(a)
            can[i][j][l][r] = 1 , nxt[i][j][l][r] = {i+1,j,0,r};
        if(b)
            can[i][j][l][r] = 1 , nxt[i][j][l][r] = {i,j+1,l,0};
    }
    if(i == n - 1&& j == m - 1 && ((p == '@' && flipped) || (p== 'O' && !flipped))){
        can[i][j][l][r] = 1 , nxt[i][j][l][r] = {-1,-1,-1,-1};
    }
    return can[i][j][l][r];
}
string ans;
void recover(int i , int j , int l , int r){
    if(i == -1 )
        return;
    if(l)
        A[i] = true;
    if(r)
        B[j] = true;
    auto [ii, jj , ll, rr] = nxt[i][j][l][r];
    if(jj > j)
        ans.push_back('P');
    else if(ii > i)
        ans.push_back('D');
    recover(ii, jj , ll,  rr);
}

void solve(){
    cin >> n >> m;
    ans.clear();
    for(int i = 0 ; i < n; i ++){
        cin >> s[i];
        A[i] = 0;
        for(int j = 0 ; j < m ; j ++)
            for(int l = 0 ; l < 2; l ++)
                for(int r = 0 ; r < 2 ; r ++)
                    can[i][j][l][r] = vis[i][j][l][r] = B[j] = 0;
    }
    bool pt = dp(0,0,0,0);
    if(pt){
        cout << "TAK" << endl;
        recover(0,0,0,0);
        for(int i = 0 ; i < n; i ++)   
            cout << (A[i] ? 'T' : 'N');
        cout << endl;
        for(int i = 0 ; i < m ; i ++)
            cout << (B[i] ? 'T' : 'N');
        cout << endl;
        cout << ans << endl;
    }
    else{
        cout << "NIE" << endl;
    }
}

int32_t main(){
    fastio;
    int t;
    cin >> t;
    while(t--){
        solve();
    }

    // math -> gcd it all
    // Did you swap N,M? N=1?
}