truction is very rare.

There is no synalepha with a word beginning with hue.

Ex. _Mucho nuestro huesped tarda_. Tirso de Molina.

In the following cases the groups of vowels which would usually make
triphthongal synalepha are pronounced in two syllables:

(1) When the first word of the group ends in two vowels which do not
form a diphthong.

Ex. _Que aun teni|a^abiertos_, p. 187, LXXIII, l. 2.

(2) When the two initial vowels of the second word do not form a
diphthong.

Ex. _Tu, sombra^a|erea que, cuantas veces_, p. 170, XV, l. 7.

(3) When the first word ends in a diphthong and the second begins with
a vowel in a constituent syllable (i.e. a syllable on which the
rhythmical accent falls).

Ex. _Tan gran designio honra tus audacias._

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

Ex. _Mientras la cencia a 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. _Tu, 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
preposition and its object, the negatives _no_ and _ni_ and a
following vowel; and after the conjunctions _y, que, si_, and other
words having a weak accent such as _desde, coma, todo, otro, cuando_,
etc.

Hiatus is most likely to occur when the accented vowel is the initial
vowel of the final word in a phrase or verse, or of a word that has a
strongly accented position in the verse; as, for example, when the
syllable is the next to the last syllable in a verse, or is the fourth
or eighth syllable of a hendecasyllabic verse of the second class.

Ex. _Rumor de besos y batir de alas_, p. 168, X, l. 6.

Ex. _Como la ola que a la playa viene_, p. 178, XXXVII, l. 19.

In the above-mentioned case, the phrase _de^oro_ is usually joined by
synalepha.

Ex. _Mi frente es palida, mis trenzas de^oro._ Becquer.

Hiatus is, however, sometimes observed in this phrase.

Ex. _De