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#include <iostream>
#include <fstream>
#include <vector>



void read_to_table(std::istream & str, long n)
{
	std::string buf;
	buf.reserve(n);

	str >> buf;

	if( buf.empty() )
	{
		std::cout << "NIE" << std::endl;
		return;
	}

	long a = 0;
	long b = buf.size() - 1;

	while( a < b )
	{
		if( buf[a] != buf [b] )
		{
			std::cout << "NIE" << std::endl;
			return;
		}

		a += 1;
		b -= 1;
	}

	std::cout << "TAK" << std::endl;
}


void read_all(std::istream & str)
{
	std::vector<long> counter;
	std::vector<unsigned long> pos;

	size_t size = 'z' - 'a' + 1;
	counter.resize(size);
	pos.resize(size);

	for(size_t i=0 ; i<size ; ++i)
	{
		counter[i] = 0;
		pos[i] = 0;
	}

	int c;
	unsigned long p = 0;

	char cc;

	do
	{
		str >> cc;
	}
	while( !str.eof() && !(cc>='a' && cc<='z') );

	c = (int)cc;

	do
	{
		if( c>='a' && c<='z' )
		{
			c = c - 'a';

			counter[c] += 1;
			pos[c] += p;

			p += 1;

		}
	}
	while( (c=str.get()) != -1 );

	int len = 0;

	for(size_t i = 0 ; i<counter.size() ; ++i)
	{
		if( (counter[i] & 0x01) != 0 )
			len += 1;
	}

	if( len > 1 )
	{
		std::cout << "NIE" << std::endl;
		return;
	}


	for(size_t i = 0 ; i<pos.size() ; ++i)
	{
		if( counter[i] > 0 && (counter[i] & 0x01) == 0 )
		{
			//pos[i] + counter[i] / 2 == p * counter[i] / 2;

			if( pos[i] / (counter[i] / 2) + 1 != p )
			{
				std::cout << "NIE" << std::endl;
				return;
			}
		}

	}


	std::cout << "TAK" << std::endl;
}


void read(std::istream & str)
{
	long n;

	str >> n;

	if( n != 0 && n < 4000000 )
		read_to_table(str, n);
	else
		read_all(str);

}




int main()
{
//	std::fstream file("input.txt");
//
//	if( !file)
//	{
//		std::cout << "nie moge otworzyc pliku wejsciowego" << std::endl;
//		return 1;
//	}
//
//	read(file);
	read(std::cin);
}