#include <iostream>
#include <string>
#include <stdio.h>

using namespace std;

const int MAX = 1000;
int x[MAX];
int y[MAX];
int N;

int SE(int a)
{
	int min = -1;
	for (int i = 0; i < N; i++)
	{
	if (y[i] == y[a])
	{ 
		if (x[i] > x[a]) 
		{
			if (min == -1) min = i;
			else if (x[i] < x[min]) min = i;
		}
	}
	}
	return min;
}
int SN(int a)
{
        int min = -1;
	for (int i = 0; i < N; i++)
	{
	   if (x[i] == x[a])
	   {
	        if (y[i] > y[a])
		{
	              if (min == -1) min = i;
	              else if (y[i] < y[min]) min = i;
		}
	      }
		        }
	return min;
}

int SS(int a)
{
        int min = -1;
	for (int i = 0; i < N; i++)
	{
	   if (x[i] == x[a])
	   {
	        if (y[i] < y[a])
		{
	               if (min == -1) min = i;
	              else if (y[i] > y[min]) min = i;
		      }
	      }
		        }
	return min;
}
int SW(int a)
{
        int min = -1;
	for (int i = 0; i < N; i++)
	{
	   if (y[i] == y[a])
	   {
	        if (x[i] < x[a])
		{
	               if (min == -1) min = i;
	              else if (x[i] > x[min]) min = i;
		      }
	      }
	}
	return min;
}





int main()
{
	
	while (scanf("%d\n",&N))
	{
		if (N == 0) break;
		int minV = 0;
		string s = "";
		string s1 = "";
		for (int i = 0; i < N; i++)
		{
		
			scanf("%d %d\n",&x[i],&y[i]);
			if (x[i] < x[minV]) minV = i;
		}
		int a = minV,b;
		bool p = true;
		for (int i = 0; i < N; ++i)
		{
			if (a == 0) 
			{
				p = false;
				if (s.length() > 0) s1 += s[s.length()-1];
			}
			if (p)
			{
			if (s.length() == 0)
			{
				if ((b = SN(a)) != -1) {s += "N"; }
				else if ((b = SE(a)) != -1) {s += "E"; ;}
				a = b;
				continue;
			}
			if ((s[s.length()-1] == 'N') || (s[s.length()-1] == 'S'))
			{
				 if ((b = SE(a)) != -1) {s += "E"; ;}
				 else if ((b = SW(a)) != -1) {s += "W"; ;}
				 a = b;
				 continue;
			}
			if (s[s.length()-1] == 'E' || s[s.length()-1] == 'W')
			{
				if ((b = SN(a)) != -1) {s += "N"; ;}
				else if((b = SS(a)) != -1) {s += "S"; ;}
				a =b;
				continue;
			}
			}
			else

			{
			if (s1.length() == 0)
			{
				if ((b = SN(a)) != -1) {s1 += "N";cout << "N"; ;}
				else if ((b = SE(a)) != -1) {s1 += "E";cout << "E"; ;}
				a = b;
				continue;
			}
			if (s1[s1.length()-1] == 'N' || s1[s1.length()-1] == 'S')
			{
				 if ((b = SE(a)) != -1) {s1 += "E";cout << "E"; ;}
				else if ((b = SW(a)) != -1) {s1 += "W"; cout << "W"; ;}
				 a = b;
				 continue;
			}
			if (s1[s1.length()-1] == 'E' || s1[s1.length()-1] == 'W')
			{
				if ((b = SN(a)) != -1) {s1 += "N"; cout << "N"; ;}
				else if ((b = SS(a)) != -1) {s1 += "S"; cout << "S"; ;}
				a = b;
				continue;
			}
			}			
		}
		cout << s << endl;
		scanf("\n");
	}
	return 0;
}