Problem: Tom loves vowels, and he likes long words with many vowels. His favorite words are vowelly words. We say a word of length k is vowelly if there are positive integers n and m such that n⋅ m = k and when the word is written by using n rows and m columns (the first row is filled first, then the second and so on, with each row filled from left to right), every vowel of the English alphabet appears at least once in every row and every column.

You are given an integer k and you must either print a vowelly word of length k or print -1 if no such word exists.

In this problem the vowels of the English alphabet are 'a', 'e', 'i', 'o' ,'u'.

Input

Input consists of a single line containing the integer k (1≤ k ≤ 10^4) — the required length.

Output

The output must consist of a single line, consisting of a vowelly word of length k consisting of lowercase English letters if it exists or -1 if it does not.

If there are multiple possible words, you may output any of them.

Examples

Input


7


Output


-1


Input


36


Output


agoeuioaeiruuimaeoieauoweouoiaouimae

Note

In the second example, the word "agoeuioaeiruuimaeoieauoweouoiaouimae" can be arranged into the following 6 × 6 grid:

<image>

It is easy to verify that every row and every column contain all the vowels.

Solution (in JAVA):

Solution:
import java.util.*;
import java.lang.*;
import java.io.*;
import java.math.*;

public class Q2 {

	static PrintWriter pw = new PrintWriter(new OutputStreamWriter(System.out));
	
	static class FastScanner {
	    private InputStream stream;
	    private byte[] buf = new byte[1024];
	    private int curChar;
	    private int numChars;
	    private SpaceCharFilter filter;
	 
	    public FastScanner(InputStream stream) {
	        this.stream = stream;
	    }
	 
	    public static boolean isWhitespace(int c) {
	        return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
	    }
	 
	    public int read() {
	        if (numChars == -1)
	            throw new InputMismatchException();
	        if (curChar >= numChars) {
	            curChar = 0;
	            try {
	                numChars = stream.read(buf);
	            } catch (IOException e) {
	                throw new InputMismatchException();
	            }
	            if (numChars <= 0)
	                return -1;
	        }
	        return buf[curChar++];
	    }
	 
	    public int nextInt() {
	        int c = read();
	        while (isSpaceChar(c))
	            c = read();
	        int sgn = 1;
	        if (c == '-') {
	            sgn = -1;
	            c = read();
	        }
	        int res = 0;
	        do {
	            if (c < '0' || c > '9')
	                throw new InputMismatchException();
	            res *= 10;
	            res += c - '0';
	            c = read();
	        } while (!isSpaceChar(c));
	        return res * sgn;
	    }
	 
	    public long nextLong() {
	        int c = read();
	        while (isSpaceChar(c))
	            c = read();
	        int sgn = 1;
	        if (c == '-') {
	            sgn = -1;
	            c = read();
	        }
	        long res = 0;
	        do {
	            if (c < '0' || c > '9')
	                throw new InputMismatchException();
	            res *= 10;
	            res += c - '0';
	            c = read();
	        } while (!isSpaceChar(c));
	        return res * sgn;
	    }
	 
	    public String nextToken() {
	        int c = read();
	        while (isSpaceChar(c))
	            c = read();
	        StringBuilder res = new StringBuilder();
	        do {
	            res.appendCodePoint(c);
	            c = read();
	        } while (!isSpaceChar(c));
	        return res.toString();
	    }
	 
	    public boolean isSpaceChar(int c) {
	        if (filter != null)
	            return filter.isSpaceChar(c);
	        return isWhitespace(c);
	    }
	 
	    public interface SpaceCharFilter {
	        public boolean isSpaceChar(int ch);
	    }
	}
	
	static class Pair implements Comparable<Pair> {
		int u, v;
		
		public Pair(int u, int v) {
			this.u = u;
			this.v = v;
		}
		
		public int compareTo(Pair o) {
			return Integer.compare(u, o.u) != 0 ? Integer.compare(u, o.u) : Integer.compare(v, o.v);
		}
	}
	
	public static void main(String[] args) throws Exception {
		FastScanner fs = new FastScanner(System.in);
		int k = fs.nextInt();
		if(isPrime[k])
			pw.println(-1);
		else {
			ArrayList<Pair> al = new ArrayList<Pair>();
			for(int i=1; i<=Math.sqrt(k); i++) {
				if(k%i == 0)
					al.add(new Pair(i, k/i));
			}
			
			int n = -1, m = -1;
			for(int i=0; i<al.size(); i++) {
				if(al.get(i).u >= 5 && al.get(i).v >= 5) {
					n = al.get(i).u;
					m = al.get(i).v;
					break;
				}
			}
			
			if(n == -1 && m == -1)
				pw.println(-1);
			else {
				String str = "aeiou";
				int idx = 0;
				char[][] arr = new char[n][m];
				for(int line=1; line<=(n+m-1); line++) {
					int start_col = Math.max(0, line-n);
					int count = Math.min(line, Math.min(m-start_col, n));
					for(int j=0; j<count; j++)
						arr[Math.min(n, line)-j-1][start_col+j] = str.charAt(idx%5);
					
					idx++;
				}
				
				StringBuilder sb = new StringBuilder();
				for(int i=0; i<n; i++)
					for(int j=0; j<m; j++)
						sb.append(arr[i][j]);
				
				pw.println(sb.toString());
			}
		}
		pw.flush();
		pw.close();
	}
	
	static boolean[] isPrime = new boolean[10001];
	
	static void sieve() {
		for(int i=2; i<=10000; i++)
			isPrime[i] = true;
		
		for(int i=2; i*i<=10000; i++) {
			if(isPrime[i]) {
				for(int j=i*i; j<=10000; j+=i)
					isPrime[j] = false;
			}
		}
	}
	
}