Alcaic Stanza or an unrhymed quatrain stanza of Greek origin. The first two lines consist of an acephalous iamb, or half an iambic foot, two trochees, and two dactyls, in that order; the third line consists of an acephalous iamb followed by four trochees; and the fourth line is composed of two dactyls followed by two trochees.
Trochee: stressed unstressed (' x)
Dactyl: stressed unstressed unstressed (' x x)
Acephalous Iamb: either one stressed (') or one unstressed (x).
Ottava Rima also called "Ariosta Stanza" is a poem consisting of stanzas with eight lines of iambic pentameter with the following rhyme scheme:
W.H. Auden wrote "Letter to Lord Byron" in Ottava Rima. This lengthy poem is Auden's direct communication to a poet that he admired, in which he discusses where poetry is in history and how things have changed.
David R. Slavitt wrote a modern poem entitled "Another Letter to Lord Byron" where he continued Auden's conversation and updated events. This poem was also in Ottava Rima.
I decided to write a letter in Ottava Rima to Josef Albers discussing his instructional manual "Interaction of colors."
Inverted Terza Rima
An Inverted Terza Rima is a form identical to a regular Terza Rima except that the second line rhymes with the first and third of the previous stanza rather than with the first and third lines of the following stanza.
Here is the rhyme pattern for the Inverted Terza Rima:
aba cac dcd ede fef
The origin of Accentual-Alliterative verse is thought to have been German, Scandinavian, and English.
Accentual-Alliterative verse is an unrhymed poem constructed of lines containing four accented syllables, two on each side of a caesura (//), or pause.
There may be a number of unaccented syllables. The initial sounds of the three accented syllables, and occasionally the fourth, are identical.
Accentual-Alliterative Verse is also called Anglo-Saxon prosody and famous epic poems like "Beowulf" were written in this style.
A great example from modern poetry is Richard Wilbur's "Junk."