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

int vowelsubset();
void separate();

char vowel[] = {'a','e','i','o','u'};
char str[100],res[50];
int main()
{
	scanf("%s",str);
	separate();
	printf("The No. of sets are: %d\n",vowelsubset());
	return 0;
}
void separate()
{
	int i,j,x=0;
	for(i = 0;i<strlen(str);i++)
		for(j = 0;j<5;j++)
			if(str[i] == vowel[j])
				res[x++] = str[i];
	res[x] = ''\0;
}
int vowelsubset()
{
	if( (strlen(res)==0 )|| (strlen(res)==1) )
		return 0;
	int cnt = 0,i,j,x,k,flag;
	for(i = 0;i<strlen(res);i++)
	{
		for(j = 0;j<5;j++)
			if( (res[i] == vowel[j]) && (vowel[j]!='u'))
			{
				flag = 0;
				for(k = i+1;k<strlen(res);k++)	
				{
					if(res[k]<=vowel[j])
					{
						i = k-1;
						goto label;
					}
					for(x = j+1;x<5;x++)
						if(res[k] == vowel[x])
							flag = 1;

				}
				label:
				if(flag == 1)
					cnt++;
			}
	}
	return cnt;
}