(_llanos_), of which the first six rhyme alternately and the last two
form a _pareado_.

When _octavas_ of this form have eight-syllable verses or less, they
are called _octavillas_.

_Octavas_ and _Octavillas Italianas_:

There are four variants, but all must have the fourth and eighth
verses _agudos_.

_First variant_: There is no _verso libre_, and the rhyme-scheme is a
b b c a d d c.

_Second variant_: The first and fifth verses are _libres_ and the
others rhyme 1 b b c 5 d d c. This form is the most used of all.

_Third variant_: All the verses are _libres_ except the fourth and
eighth.

_Fourth variant_: The rhymes have some other arrangement than those
mentioned in the three preceding cases.

_Décimas_ are strophes of ten octosyllabic verses with the
rhyme-scheme a b b a a c c d d c.

Thus far all the compositions treated have been strophes, of which all
the lines have the same number of syllables.

The most common strophes having an unequal number of syllables in the