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#include <bits/stdc++.h>
using namespace std;

typedef long long LL;
typedef long double LD;
typedef pair<int, int> PII;
typedef pair<LL, LL> PLL;

#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()

template<typename _T> inline void _DBG(const char *s, _T x) { cerr << s << " = " << x << "\n"; }
template<typename _T, typename... args> void _DBG(const char *s, _T x, args... a) { while(*s != ',') cerr << *s++; cerr << " = " << x << ','; _DBG(s + 1, a...); }

#ifdef LOCAL
#define _upgrade ios_base::sync_with_stdio(0);
#define DBG(...) _DBG(#__VA_ARGS__, __VA_ARGS__)
#else
#define _upgrade ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define DBG(...) (__VA_ARGS__)
#define cerr if(0) cout
#endif

// ********************** CODE ********************** //

const int N = 1e5 + 7;

int n, deg[N];
string from, to;
pair<int, int> edges[N];
vector<int> G[N];

bool has_prefix(const string &s, int x)
{
    int c[2] = {0, 0};
    for (int i = 0; i < n; i++)
        c[s[i] - '0']++;
    
    for (int i = 0; i < c[x]; i++)
    {
        if (s[i] - '0' != x)
            return false;
    }
    return true;
}

bool has_subsequent(const string &s, int x)
{
    int f = -1, l = -2, c = 0;
    for (int i = 0; i < n; i++)
    {
        if (s[i] - '0' == x)
        {
            if (f == -1)
                f = i;
            l = i;
            c++;
        }
    }
    return l - f + 1 == c;
}

void solve_one_test_case()
{
    cin >> n;
    cin >> from >> to;
    for (int i = 0; i < n - 1; i++)
    {
        int a, b;
        cin >> a >> b;
        edges[i] = {a - 1, b - 1};
    }
    
    if (from == to)
    {
        cout << "TAK\n";
        return;
    }

    if (n == 1)
    {
        cout << "NIE\n";
        return;
    }

    bool independent_set = true;
    for (int i = 0; i < n - 1; i++)
    {
        auto [a, b] = edges[i];
        if (to[a] == to[b])
            independent_set = false;
    }
    if (independent_set)
    {
        cout << "NIE\n";
        return;
    }

    bool all_equal = true;
    for (int i = 1; i < n; i++)
    {
        if (from[i] != from[0])
            all_equal = false;
    }
    if (all_equal)
    {
        cout << "NIE\n";
        return;
    }

    for (int i = 0; i < n; i++)
    {
        deg[i] = 0;
        G[i].clear();
    }

    for (int i = 0; i < n - 1; i++)
    {
        auto [a, b] = edges[i];
        G[a].push_back(b);
        G[b].push_back(a);
        deg[a]++;
        deg[b]++;
    }

    int leaf = -1;
    for (int i = 0; i < n; i++)
    {
        if (deg[i] == 1)
            leaf = i;
    }

    bool is_path = true;
    int p = leaf, v = G[leaf][0];
    vector<int> path = {p, v};
    for (int i = 0; i < n - 2; i++)
    {
        if (deg[v] != 2)
        {
            is_path = false;
            break;
        }
        if (G[v][0] != p)
        {
            p = v;
            v = G[v][0];
        }
        else
        {
            p = v;
            v = G[v][1];
        }
        path.push_back(v);
    }
    if (deg[v] != 1)
        is_path = false;

    if (is_path)
    {
        string path_from, path_to;
        for (int i = 0; i < n; i++)
        {
            path_from.push_back(from[path[i]]);
            path_to.push_back(to[path[i]]);
        }

        string a, b;
        for (int i = 0; i < n; i++)
        {
            if (i + 1 == n || path_from[i + 1] != path_from[i])
                a.push_back(path_from[i]);
        }
        for (int i = 0; i < n; i++)
        {
            if (i + 1 == n || path_to[i + 1] != path_to[i])
                b.push_back(path_to[i]);
        }

        int id = 0;
        for (int i = 0; i < sz(a); i++)
        {
            if(id < sz(b) && a[i] == b[id])
                id++;
        }

        cout << (id == sz(b) ? "TAK" : "NIE") << "\n";
        return;
    }

    cout << "TAK\n";
}

int main()
{
    _upgrade
    
    int t;
    cin >> t;

    while(t--)
        solve_one_test_case();

    return 0;
}