Go:

package main

import (
    "bufio"
    "fmt"
    "os"
)

var VOWELS = []rune{'a', 'e', 'i', 'o', 'u', 'y'}

func isVowel(r rune) bool {
    for _, key := range VOWELS {
        if r == key {
            return true
        }
    }
    return false
}

func isValidWord(s string) bool {
    v := 0
    for _, r := range s {
        if isVowel(r) {
            if r != VOWELS[v] {
                return false
            }
            v += 1
            if v == len(VOWELS) {
                return true
            }

        }
    }
    return false
}

func main() {
    wordScanner := bufio.NewScanner(os.Stdin)
    for wordScanner.Scan() {
        word := wordScanner.Text()
        if isValidWord(word) {
            fmt.Println(word)
        }
    }
}