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

#define int long long

#define PB push_back
#define MP make_pair
#define FI first
#define SE second
#define ST FI
#define ND SE
#define SZ(x) ((int)(x).size())

#define ALL(it, x) for(__typeof(x.begin()) it = x.begin(); it != x.end(); it++)
#define REP(i, x) for (int i = 0; i < x; i++)
#define FOR(i, x) for (int i = 1; i <= x; i++)
#define BACK(i, x) for (int i = x; i; i--)

typedef pair<int, int> PII;
typedef vector<int> VI;
typedef vector<VI> VVI;

template<typename TH> void _dbg(const char* s, TH h) { cerr<<s<<"="<<h<<"\n"; }
template<typename TH, typename... TA> void _dbg(const char* s, TH h, TA... t) {
  while(*s != ',') {cerr<<*s++;} cerr<<"="<<h<<","; _dbg(s+1, t...);
}
#ifdef LOCAL
#define debug(...) _dbg(#__VA_ARGS__, __VA_ARGS__)
#define debugv(x) {{cerr <<#x <<" = "; ALL(itt, (x)) cerr <<*itt <<", "; cerr <<"\n"; }}
#else
#define debug(...) (__VA_ARGS__)
#define debugv(x)
#define cerr if(0)cout
#endif

const char MPOD = 2, MMOD = 3;

int pods[MPOD];
int mods[MMOD];

class hasz {
public:
  int8_t pi;
  int8_t mi;
  int pod_pow = 1;

  int pref = 0, suf = 0;

  void add(int d) {
    pref = (pref * pods[pi] + d) % mods[mi];
    suf = (suf + pod_pow * d) % mods[mi];
  }

  void idz_forward() {
    pod_pow = (pod_pow * pods[pi]) % mods[mi];
  }

  void init(char pi0, char mi0) {
    pi = pi0;
    mi = mi0;
  }

};

hasz hashes[MPOD][MMOD];

int32_t main(){
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout << setprecision(7) << fixed;

  pods[0] = 29;
  pods[1] = 37;
  mods[0] = 1000 * 1000 * 1000 + 7;
  mods[1] = 1000 * 1000 * 1000 + 9;
  mods[2] = 1000 * 1000 * 1000 + 33;

  REP(i, MPOD) {
    REP(j, MMOD) {
      hashes[i][j].init(i, j);
    }
  }

  int a;
  a = scanf("%lld", &a);

  char c;
  char r;
  c = scanf("%c", &c);
  while(1) {
    r = scanf("%c", &c);
    if (r != 1)
      break;
    if (c == 10)
      break;

    //cerr << r << " " << c << " " << (int)c << endl;
    
    REP(i, MPOD) {
      REP(j, MMOD) {
        hashes[i][j].add(c - 'a');
        hashes[i][j].idz_forward();
      }
    }
  }

  r = 1;
  REP(i, MPOD) {
    REP(j, MMOD) {
      debug(hashes[i][j].pref, hashes[i][j].suf);
      r &= (hashes[i][j].pref == hashes[i][j].suf);
    }
  }
  if (r) {
    cout << "TAK" << endl;
  }
  else {
    cout << "NIE" << endl;
  }

  return 0;
}