If the accented vowel is not in a constituent syllable synalepha may
occur.

Ex. _Mientras la cencia á descubrir no alcance_, p. 165, IV, l. 13.

(4) When the first word ends in a single vowel, and the second word
begins with a diphthong in a constituent syllable.

Ex. _Tú, proceloso austro que derribas_.

(3) and (4) might well be considered as cases of hiatus.



SYNALEPHA BETWEEN FOUR OR MORE VOWELS


This is less common, yet it exists.

Ex. _No^h^a^y^amor donde no hay celos_. Lope de Vega.




HIATUS

Hiatus is most frequently found between words having a close
syntactical relation, particularly if the initial vowel of the second
word is in a constituent syllable. It may occur between the article
and its substantive, the possessive adjective and its substantive, a