Cywydd deuair fyrion
Type: Structure, Metrical Requirement, Rhyme Scheme Requirement
Description: Four syllable lines in rhymed couplets. (Cow-idd dye-ire vuhr-yon or cuh’-with day’-air fruh’-yon) It can be true or half-rhyme.
Rhythm/Stanza Length: 2
Pasted from http://www.poetrybase.info/forms/000/70.shtml
My thanks to Charles L. Weatherford for his years of work on the wonderful Poetrybase resource.