import java.util.Random;

public class no349 {
	public static void main(String[] args){
		int[] eto = new int[12];
		String[] etoarray = {"ne","ushi","tora","u","tatsu","mi","uma","hitsuji","saru","tori","inu","i"};
		String A="";
		Random rndm = new Random();
		int max=0;
	    int N = rndm.nextInt(49)+2;
	    System.out.println(N);
		for(int j=0;j<N;j++){
			int etorndm=rndm.nextInt(12);
			A=etoarray[etorndm];
			eto[etorndm]++;
			System.out.println(A);
		}
		for(int j=0;j<eto.length;j++){
			max=Math.max(max,eto[j]);
		}
		if(N%2==0&&max<=N/2){
			System.out.println("YES");
		}else if(N%2!=0&&max<=N/2+1){
			System.out.println("YES");
		}else{
			System.out.println("NO");
		}

	}
}