#include <iostream>#include <cstdio>#include <cstdlib>#include <cstring>using namespace std;char st[50];bool v(char a){ return a =='a' ||a =='e' ||a =='i' ||a =='o' ||a =='u';}bool accept(){ int n = strlen(st); bool found = false; for (int i = 0; i < n; i++) if (v(st[i])) { found = true; break; } if (!found) return false; int count = 1; for (int i = 1; i < n; i++) { if (v(st[i]) == v(st[i - 1])) count++; else count = 1; if (count >= 3) return false; } for (int i = 1; i < n; i++) if (st[i] == st[i - 1] && st[i] != 'e' && st[i] != 'o') return false; return true;}int main(){ while (scanf("%s", st), strcmp(st, "end")) { if (accept()) printf("<%s> is acceptable.n", st); else printf("<%s> is not acceptable.n", st); } return 0;}
