If the vowels are the same, they usually combine into one:
Del | sol | en | la al|ta | cum|bre
Tem|blar | en | tor|no | de él|: un | ar|co in|men|so...
(5) FINAL SYLLABLES
In estimating the number of syllables in a Spanish verse-line one final unstressed syllable after the last stressed syllable is counted whether it be present or not; or, if there be two unstressed syllables at the end of the line, only one is counted.[21] Thus the following are considered 8-syllable lines although, in fact, one line has nine syllables and another has only seven:
La | sal|pi|ca | con | es|com|bros
De | cas|ti|llos | y | de al|cá|za|res...
Pa|ra | vol|ver | á | bro|tar...