#include <bits/stdc++.h>

typedef long double ld;
typedef long long ll;
using namespace std;
int di[] = {1, 0, -1, -1, 0, 1, -1, 1};
int dj[] = {1, 1, 0, -1, -1, 0, 1, -1};
const ll oo = 1e18, MOD = 998244353;
const int N = 2005, M = 1e6 + 5;
const ld PI = acos(-1.0), EPS = 1e-9;

//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
//using namespace __gnu_pbds;
//typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

int t, n, m, vis[N][N][2][2][2][2], id;
char rows[N], cols[N], path[N * 2], a[N][N];
bool dp[N][N][2][2][2][2];

bool solve(int i, int j, int doner, int donec, int snaker, int snakec) {
    bool &ret = dp[i][j][doner][donec][snaker][snakec];
    if (i == n - 1 && j == m - 1) return ret = 1;
    if (vis[i][j][doner][donec][snaker][snakec] == id) return ret;
    vis[i][j][doner][donec][snaker][snakec] = id;
    ret = 0;
    if (i != n - 1 && a[i + 1][j] != '#') {
        if (a[i + 1][j] == '.' || (a[i + 1][j] == 'O' && !donec) || (a[i + 1][j] == '@' && donec))
            ret |= solve(i + 1, j, 0, donec, a[i + 1][j] == 'O', snakec | (a[i + 1][j] == 'O'));
        if (a[i + 1][j] == '@' && !donec) ret |= solve(i + 1, j, 1, 0, 0, snakec);
        if (a[i + 1][j] == '@' && !donec && !snakec) ret |= solve(i + 1, j, 0, 1, 0, 0);
        if (a[i + 1][j] == 'O' && donec) ret |= solve(i + 1, j, 1, 1, 1, 1);
    }
    if (j != m - 1 && a[i][j + 1] != '#') {
        if (a[i][j + 1] == '.' || (a[i][j + 1] == 'O' && !doner) || (a[i][j + 1] == '@' && doner))
            ret |= solve(i, j + 1, doner, 0, snaker | (a[i][j + 1] == 'O'), a[i][j + 1] == 'O');
        if (a[i][j + 1] == '@' && !doner) ret |= solve(i, j + 1, 0, 1, snaker, 0);
        if (a[i][j + 1] == '@' && !doner && !snaker) ret |= solve(i, j + 1, 1, 0, 0, 0);
        if (a[i][j + 1] == 'O' && doner) ret |= solve(i, j + 1, 1, 1, 1, 1);
    }
    return ret;
}

void build(int i, int j, int doner, int donec, int snaker, int snakec) {
    if (i == n - 1 && j == m - 1) return;
    if (i != n - 1 && a[i + 1][j] != '#') {
        if (a[i + 1][j] == '.' || (a[i + 1][j] == 'O' && !donec) || (a[i + 1][j] == '@' && donec)) {
            if (dp[i + 1][j][0][donec][a[i + 1][j] == 'O'][snakec | (a[i + 1][j] == 'O')]) {
                path[i + j] = 'D';
                build(i + 1, j, 0, donec, a[i + 1][j] == 'O', snakec | (a[i + 1][j] == 'O'));
                return;
            }
        }
        if (a[i + 1][j] == '@' && !donec) {
            if (dp[i + 1][j][1][0][0][snakec]) {
                path[i + j] = 'D', rows[i + 1] = 'T';
                build(i + 1, j, 1, 0, 0, snakec);
                return;
            }
        }
        if (a[i + 1][j] == '@' && !donec && !snakec) {
            if (dp[i + 1][j][0][1][0][0]) {
                path[i + j] = 'D', cols[j] = 'T';
                build(i + 1, j, 0, 1, 0, 0);
                return;
            }
        }
        if (a[i + 1][j] == 'O' && donec) {
            if (dp[i + 1][j][1][1][1][1]) {
                path[i + j] = 'D', rows[i + 1] = 'T';
                build(i + 1, j, 1, 1, 1, 1);
                return;
            }
        }
    }
    if (j != m - 1 && a[i][j + 1] != '#') {
        if (a[i][j + 1] == '.' || (a[i][j + 1] == 'O' && !doner) || (a[i][j + 1] == '@' && doner)) {
            if (dp[i][j + 1][doner][0][snaker | (a[i][j + 1] == 'O')][a[i][j + 1] == 'O']) {
                path[i + j] = 'P';
                build(i, j + 1, doner, 0, snaker | (a[i][j + 1] == 'O'), a[i][j + 1] == 'O');
                return;
            }
        }
        if (a[i][j + 1] == '@' && !doner) {
            if (dp[i][j + 1][0][1][snaker][0]) {
                path[i + j] = 'P', cols[j + 1] = 'T';
                build(i, j + 1, 0, 1, snaker, 0);
                return;
            }
        }
        if (a[i][j + 1] == '@' && !doner && !snaker) {
            if (dp[i][j + 1][1][0][0][0]) {
                path[i + j] = 'P', rows[i] = 'T';
                build(i, j + 1, 1, 0, 0, 0);
                return;
            }
        }
        if (a[i][j + 1] == 'O' && doner) {
            if (dp[i][j + 1][1][1][1][1]) {
                path[i + j] = 'P', cols[j + 1] = 'T';
                build(i, j + 1, 1, 1, 1, 1);
                return;
            }
        }
    }
}

#define endl '\n'

int main() {
    ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    //freopen("farm.in", "r", stdin);
    //memset(dp, -1, sizeof dp);
    cin >> t;
    while (t--) {
        id++;
        cin >> n >> m;
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < m; j++) cin >> a[i][j];
        }
        bool no = 0;
        for (int i = 0; i < n; i++) rows[i] = 'N';
        for (int i = 0; i < m; i++) cols[i] = 'N';
        if (solve(0, 0, 0, 0, a[0][0] == 'O', a[0][0] == 'O') && a[0][0] != '#' && a[0][0] != '@')
            build(0, 0, 0, 0, a[0][0] == 'O', a[0][0] == 'O');
        else if (a[0][0] == '@' && solve(0, 0, 1, 0, 0, 0))
            build(0, 0, 1, 0, 0, 0), rows[0] = 'T';
        else if (a[0][0] == '@' && solve(0, 0, 0, 1, 0, 0))
            build(0, 0, 0, 1, 0, 0), cols[0] = 'T';
        else no = 1;
        if (no) cout << "NIE" << endl;
        else {
            cout << "TAK" << endl;
            for (int i = 0; i < n; i++) cout << rows[i];
            cout << endl;
            for (int i = 0; i < m; i++) cout << cols[i];
            cout << endl;
            for (int i = 0; i < n + m - 2; i++) cout << path[i];
            cout << endl;
        }
    }

    return 0;
}