/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		char[]vowel =  {'a','e','i','o','u'};
		String test = "aeiouaaaeeeiiiooouuu";
		int[]dp = new int[5];
		int count = 0; // Keeping track of how many identical vowel exist in this block
		for(int i = 0; i < test.length(); i++){
			int index = -1;
			for(int j = 0; j < 5; j++){
				if(vowel[j] == test.charAt(i)){
					index = j;
					break;
				} 
			}
			if(index != -1){
				if(i > 0 && test.charAt(i - 1) == test.charAt(i)){
					count++;
				}else{
					count = 1;
				}
			    dp[index] = Integer.max(dp[index], count + (index > 0 ? dp[index - 1] : 0));  
			}
		}
		System.out.println(dp[4]);
 
	}
}

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