#include "iostream"

 using namespace std;

 #define Max 21

 int Function1(char *p,int len);

 int Function2(char *p,int len);

 int Function3(char *p,int len);

 int vowel(char p);

 int main(void)

 {

     char letters[Max];

     int len;

     int condition_1=,condition_2=,condition_3=;

     while(cin>>letters)

     {

         if(!strcmp(letters,"end"))

             break;

         len=strlen(letters);

         condition_1=Function1(letters,len);

         condition_2=Function2(letters,len);

         condition_3=Function3(letters,len);

         if(condition_1&&condition_2&&condition_3)

             cout<<"<"<<letters<<">"<<" is acceptable."<<endl;

         else

             cout<<"<"<<letters<<">"<<" is not acceptable."<<endl;

     /*    if(condition_1==1)

         {

             condition_2=Function2(letters,len);

             if(condition_2==1)

             {

                 condition_3=Function3(letters,len);

                 if(condition_3==1)

                     cout<<"<"<<letters<<">"<<" is acceptable."<<endl;

                 else cout<<"<"<<letters<<">"<<" is not acceptable."<<endl;

             }

             else cout<<"<"<<letters<<">"<<" is not acceptable."<<endl;

         }

         else cout<<"<"<<letters<<">"<<" is not acceptable."<<endl;*/

     }

     return ;

 }

 int Function1(char *p,int len)

 {

     for(int i=;i<len;i++)

     {

         if(p[i]=='a'||p[i]=='e'||p[i]=='i'||p[i]=='o'||p[i]=='u')

             return ;

     }

     return ;

 }

 int Function2(char *p,int len)

 {

     for(int i=;i<len;i++)

     {

         if(((i+)<len)&&(vowel(p[i]))&&(vowel(p[i+]))&&(vowel(p[i+])))

             return ;

         else if(((i+)<len)&&(!vowel(p[i]))&&(!vowel(p[i+]))&&(!vowel(p[i+])))

             return ;

     }

     return ;

 }

 int Function3(char *p,int len)

 {

     char flag;

     for(int i=;i<len;i++)

     {

         flag=p[i];

         if(((i+)<len)&&(p[i+]==flag)&&(flag!='e')&&(flag!='o'))

             return ;

     }

     return ;

 }

 int vowel(char p)

 {

     if(p=='a'||p=='e'||p=='i'||p=='o'||p=='u')

         return ;

     else return ;

 }