In UD, all conjuncts of a coordination are attached to the head of the first conjunct in a bouquet. In SUD, each conjunct is attached to the head of the previous one in a chain.
The first example below shows the annotation of a coordination in UD and the second one the corresponding annotation in SUD.
The conjunct of a coordination can itself be a coordination. Theoretically, this embedding can be nested indefinitely. In natural corpora, however, there is typically only one level of iteration.
conj label does not make a distinction between embedded relations and surface relations because they form a single chain. However, these relations can be distinguished with the use of the extension
emb for embedded coordinations, as the following example shows.
Left dependents on coordination are attached to the head of the coordination. Since the head of a coordination is the head of the leftmost conjunct, it is not possible to distinguish these dependents from the own dependents of the leftmost conjunct.
Right dependents on a coordination are attached to the head of the rightmost conjunct, but they can be confused with the own dependents of this conjunct.
As a consequence, left and right dependents on a coordination are marked with feature
Shared=Yes, which distinguishes them from the own dependents of the respective leftmost and rightmost conjuncts.