component verses are as follows:

_Endechas reales_ are _cuartetas_ in which three heptasyllables are
followed by a hendecasyllable. The even verses are usually in
assonance, although the verses may have the rhyme-scheme a b a b.

The _Lira_ is a strophe of five verses, of which the first, third, and
fourth are heptasyllables, and the second and fifth are
hendecasyllables. The rhyme-scheme is a b a b b.

_Seguidillas_ are strophes composed of seven verses, three of which
are heptasyllables and four pentasyllables. The first, third, and
sixth verses are _libres_, the second and fourth have the same
assonance, and the fifth and seventh another distinct assonance.

_Silvas_ are series of strophes composed of hendecasyllables and
heptasyllables of unequal number and unevenly distributed with a free
arrangement of rhymes. Every verse should rhyme with another, yet
sometimes a verse is left unrhymed in long compositions.

The _Sonnet_ is taken from the Italian and has the same general forms.
It is written in hendecasyllables, and is always divided into four
parts--two quatrains and two tercets.

_Versos sueltos_ (blank verse) are verses which do not assonate with
the other contiguous verses, or with the nearest words in which the
sense demands a pause.

There are many other and very artificial forms that exist, but their
treatment would be irrelevant here. During the nineteenth century the