#include <cstdlib>#include <cstdio>using namespace std;int arr[105][8];char ch[8][4] = {"NNN", "NNY", "NYN", "NYY", "YNN", "YNY", "YYN", "YYY"};int re[8],cmp[8], t[4];int main(){int ca, n;while(scanf("%d", &ca) != EOF){ while(ca--){ for(int i = 0; i < 8; i++) re[i] = i; scanf("%d", &n); for(int i = 0; i < n; i++) for(int j = 0; j < 8; j++) scanf("%d", &arr[i][j]); for(int i = n - 1; i >= 0; i--){ for(int j = 0; j < 8; j++){ for(int k = 0; k < 3; k++){ t[k] = re[1<<k^j]; } cmp[j] = t[0]; if(arr[i][cmp[j]] > arr[i][t[1]]) cmp[j] = t[1]; if(arr[i][cmp[j]] > arr[i][t[2]]) cmp[j] = t[2]; } for(int j = 0; j < 8; j++) re[j] = cmp[j]; } printf("%sn", ch[re[0]]); }}return 0;}
