#include <stdio.h>
#include <stdbool.h>

int main()
{
    unsigned int word = 0u;
    unsigned int new_word = 0u;
    unsigned int letter = 1u;
    char c;
    int summ = 0, unique = 0;
    bool flag = true;

    scanf("%c", &c);

    while (c != EOF)
    {
        while((c != ' ') && (c != ',') && (c != '\t') && (c != '\n') && (c != EOF)){
            if ((c == 'a') || (c == 'e') || (c == 'i') || (c == 'o') ||(c == 'u')){
                summ++;
                letter = 1u << (c - 'a');
                new_word = new_word | letter;
                if( new_word != word ){
                    unique++;
                    word = new_word;
                }
            }

            scanf("%c", &c);
        }

        if ((summ == unique) && (summ != 0)){
            printf("YES");
            flag = false;
            break;
        }

        scanf("%c", &c);
    }

    if (flag){
        printf("NO");
    }
}