of which one occurs three times and the other twice. These verses may
rhyme at the will of the poet, provided that three verses having the
same rhyme do not follow each other successively. Of the possible
arrangements the following occur most frequently: a a b b a, a b b a
a, a b a b a, a b a b b.

_Sextinas_ are usually composed of six hendecasyllabic verses in which
a _serventesio_ is followed by a _pareado_.

The first, third, and fifth verses, however, may rhyme together, and
the second, fourth, and sixth.

There are also _sextinas_ which have the third and sixth verses with a
consonantal rhyme in words that are _agudas_, while the first and
second, and the fourth and fifth, form _pareados_.

In compositions written in _sextinas_ the succeeding strophes have the
same arrangement as the first.

Octavas:

_Octavas de Arte mayor_ are composed of eight dodecasyllables divided
into two equal hemistichs, with the accents on the second, fifth,
seventh, and eleventh syllables. The first verse rhymes with the
fourth, fifth, and eighth; the second with the third; and the sixth
with the seventh. Sometimes the second rhymes with the fourth, the
fifth with the eighth, the first with the third, the sixth with the
seventh.

_Octavas reales_ are strophes of eight hendecasyllabic verses