Poetry to the use of interlocking stanzas is their use to separate thematic parts of a poem. For example, the strophe, antistrophe and epode of the ode form are often separated into one or more stanzas. In some cases, particularly lengthier formal poetry such as some forms of epic poetry, stanzas themselves are constructed according to strict rules and then combined. In skaldic poetry, the dróttkvætt stanza had eight lines, each having three "lifts" produced with alliteration or assonance. In addition to two or three alliterations, the odd numbered lines had partial rhyme of consonants with dissimilar vowels, not necessarily at
Tercet the villanelle, where the initial five stanzas are tercets, followed by a concluding quatrain. A tercet may also form the separate halves of the ending sestet in a Petrarchan sonnet, where the rhyme scheme is ABBAABBACDCCDC, as in Longfellow's "Cross of Snow". For example, while "Cross of Snow" is indeed a Petrarchan sonnet, it does not follow the form of ABBAABBA CDCCDC. Instead, its form is ABBA CDDC EFG EFG. A tercet also ends sestinas where the keywords of the lines before are repeated in a highly ordered form. The tercet was introduced into English poetry by Sir Thomas Wyatt