#include <stdio.h>
#include <string.h>
int main()
{
	char m;
    int i;
  while(scanf("%c",&m)!=EOF)
    {
    	if(m>='a'&&m<='z')
    	{
    	   if(m=='a'||m=='e'||m=='i'||m=='o'||m=='u')
		 	{
		   		printf("vowel\n");
		
		 	}
			else
		 	{
		  		printf("consonant\n");
			}
		}
	}
return 0;
}