Editing Cynghanedd (section)

=== ''Cynghanedd groes'' ("cross-harmony") ===

All consonants surrounding the main stressed vowel before the [[caesura]] must be repeated after it in the same order. However, the final consonants of the final words of each half of the line must be different, as must the main stressed vowel of each half. For example, from the poem ''[[s:cy:Cywydd y Cedor|Cywydd y Cedor]]'', by the fifteenth-century poet [[Gwerful Mechain]]:

{{quote|''{{font color||yellow|cl}}aw{{font color||yellow|dd}} i {{font color||yellow|dd}}'''a'''{{font color||yellow|l}} / {{font color||yellow|c}}a{{font color||yellow|l}} {{font color||yellow|dd}}wy {{font color||yellow|dd}}'''wy'''{{font color||yellow|l}}aw''}}

Here we see the pattern {C L Dd Dd [stress] L} present on both sides of the caesura. The main stressed vowels are ⟨a⟩ (a short monophthong) and ⟨wy⟩ (the diphthong /uj/).

In ''cynghanedd groes'' there are generally no consonants in the second half of the line which are not part of the consonantal echoing  (there are exceptions, especially in the case of {{angbr|n}} at the beginning of the half and, as mentioned above, a line-final consonant). The vowels other than those under the main stresses may be of any kind.