(c) In stressed diphthongs and triphthongs only the vowels receiving the stress assonate, as in vale, aire (á-e), cabellos, suelo (é-o), envolviendo, aposento (é-o), guardias, alta (á-a), pleito, siento (é-o), mucho, triunfo (ú-o).
(d) In unstressed diphthongs and triphthongs only the strong vowels assonate, as in turba, lluvia (ú-a), licencia, quisierais (é-a), pido, continuo (í-o). Similarly, e or o, before another strong vowel, is disregarded in an unstressed diphthong, as in modo, erróneo (ó-o), crece, héroe (é-e).
(e) In final unstressed syllables, i and u (not in diphthongs) assonate with e and o, respectively, as in verde, débil (é-e), amante, fácil (á-e), líquido, espíritu (í-o).
(3) In Spanish blank verse (versos sueltos, libres, blancos) there is usually no rime; or if there be rime it is merely incidental. Blank verse usually consists of 11-syllable lines.
¡Oh! ¡cuánto rostro veo, á mi censura,
De palidez y de rubor cubierto!
Ánimo, amigos, nadie tema, nadie,
Su punzante aguijón; que yo persigo
En mi sátira el vicio, no al vicioso,