import java.io.*;
public class HumanlyPronounceableCombination extends AllCombination
{
	//--------------------------------------------
	// Method that check character is vowel or not
	//--------------------------------------------
	public boolean isvowel(char c)
	{
		if(c == 'a')
		{
			return true;
		}
		else if( c == 'e')
		{
			return true;
		}
		else if(c == 'i')
		{
			return true;
		}
		else if(c == 'o')
		{
			return true;
		}
		else if(c == 'u')
		{
			return true;
		}
		else
		{
			return false;
		}
	}
	//---------------------------------------------------------
	// Method that generate Humanly Pronounceable Combination .
	//---------------------------------------------------------
	public String showHumanlyPronounceableCombination(String stringInput)
	{
		String wordArray="";
		String strbase="";
		String output = "";
		int flag=1;
		stringInput=stringInput.toLowerCase();
		String allComb=allCombination(wordArray,strbase,stringInput);
		String[] combArray = allComb.split(",");

		for(int i = 0; i < combArray.length; i++)
		{
			for(int j = 0; j < combArray[i].length()-1; j++)
			{
				char [] charArray = combArray[i].toCharArray();//convert combination string to char array
				if(!isvowel(charArray[j]))
				{
					if(isvowel(charArray[j+1]))
					{
						flag = 0;
					}
					else
					{
						flag = 1;
						break;
					}
				}
				if(isvowel(charArray[j]))
				{
					flag = 2;
				}
				if(flag == 0)
				{
					if(isvowel(charArray[j+1]))
					{
						flag = 0;
					}
					else
					{
						flag = 1;
						break;
					}
				}
			}

			if(flag == 0 || flag == 2)
			{
				if(output == "")
				{
					output = combArray[i];
				}
				else
				{
					output = output+","+combArray[i] ;
				}
			}
		}
		return output;
	}
	public static void main(String[] args)throws ArrayIndexOutOfBoundsException, IOException
	{
		HumanlyPronounceableCombination s = new HumanlyPronounceableCombination();
		DataInputStream dis = new DataInputStream(System.in);
		System.out.println("Enter String : ");
		String inputString = dis.readLine();
		String output = s.showHumanlyPronounceableCombination(inputString);
		System.out.println("Output String : "+output);

	}
}