We say that a string
is covered by vowels (it’s vowel_covered) if
is longer than 4, its initial and final positions are uppercase vowels
and its second and last but one positions are lowercase vowels. Thus
AiaI is not covered by vowels since its length
is 4, but AureA is covered by vowels.
Implement the function @is_vowel_covered(s)@ which returns if a given string is vowel covered and otherwise.
>>> is_vowel_covered("AaaaA") True >>> is_vowel_covered("AaaA") False >>> is_vowel_covered("AeioUAeioU") True >>> is_vowel_covered("aAppAlAa") False >>> is_vowel_covered("AaaaaazZ") False