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#include <string>
#include <iostream>
#include <vector>
using namespace std;

int num(char a)
{
    switch(a)
    {
    case 'A':
        return 0;
    case 'B':
        return 1;
    case 'C':
        return 2;
    }
}

int main()
{
    vector<int> t[5];
    for(int i = 0;i < 5;i++)
    {
        for(int o = 0;o < 3;o++)
        {
            t[i].push_back(0);
        }
    }

    int n,con;
    cin >> n;
    string a;
    vector<string> arr;
    for(int i = 0; i < n; i++)
    {
        cin >> a;
        arr.push_back(a);
    }
    for(int i = 0; i < n; i++)
    {
        con = arr[i][0] - 48;
        switch(con)
        {
        case 1:
            if(t[0][num(arr[i][1])] == 1)
                break;
            t[0][num(arr[i][1])]++;
            break;
        case 2:
            if(t[1][num(arr[i][1])] == 1)
                break;
            t[1][num(arr[i][1])]++;
            break;
        case 3:
            if(t[2][num(arr[i][1])] == 1)
                break;
            t[2][num(arr[i][1])]++;
            break;
        case 4:
            if(t[3][num(arr[i][1])] == 1)
                break;
            t[3][num(arr[i][1])]++;
            break;
        case 5:
            if(t[4][num(arr[i][1])] == 2)
                break;
            t[4][num(arr[i][1])]++;
            break;
        }
    }
    for(int i = 0;i < 5;i++)
    {
        for(int o = 0;o < 3;o++)
        {
            if((t[i][o] == 0 && i < 4) || (t[i][o] < 2 && i == 4))
            {
                cout << "NIE";
                return 0;
            }
        }
    }
    cout << "TAK";
    return 0;
}