A general term for any given arrangement of metrical verse lines into a poem, sequence of stanzas, or stichic form, along with its rhyme scheme (if any). The range of possible verse forms thus includes stichic poems of indeterminate length, either unrhymed (e.g. blank verse) or rhymed (e.g. as couplets or in terza rima); poems of specified length and metre in rhyme (e.g. sonnet, limerick) or unrhymed (e.g. haiku); sequences of particular stanzas (e.g. quatrains, ottava rima); and fixed forms such as the sestina or villanelle.