#include<stdio.h>
#include<string.h>
#define STRING_LENGTH 80
int main(void){
	int T,count,i,length;
	scanf("%d",&T);
	char str[STRING_LENGTH+1];
	while(T--){
		scanf("%d",&T);
		gets(str);
		length=strlen(str);
		for(i=0;i<length;++i){
			if(str[i]=='a'||str[i]=='e'||str[i]=='i'||str[i]=='o'||str[i]=='u')
			count++;
			else
			continue;
		}
		printf("%d\n",count);
		count=0;
	}
	return 0;
}