A Prayer for My Daughter its "metremes", or rhymical motifs, rather than common metrical devices. The poem also may be read to consist of straightforward iambic verse that relies on common metrical devices such as elision, acephalous lines, promotion, and metrical inversion. Lines 1, 2, 3, 5, and 8 of each stanza are iambic pentameter; lines 4, 6, and 7 are iambic tetrameter. For instance, using traditional principles of scansion, stanza two may be scanned as shown below, where syllables in all caps represent metrical beats, lower-case syllables represent metrical off-beats, the vertical bar represents the termination of a metrical foot, and apostrophes represent elisions.
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