Grammar production for Ukrainian

Low-level grammar categories

The leaves of the generated syntactic tree will define parts of speech of a word. So that first level will always look like this:

Том <- Noun
побачив <- Verb
неймовірно <- Adverb
гарну <- Adjective
дівчину <- Noun

These POSes can be united to some low-level grammar categories. For example, "неймовірно гарна" phrase consists of two words but still functions as a description of a noun "дівчина", so it can be considered as the modifier. Here's the full list of such categories.

Name	Code	Ukrainian name	Description
Modifier	MOD	Означення	A group of related adjectives or/and determiners.
Adverbial	ADV	Обставина	A group of related adverbs or a combination of adposition and entity.

Middle-level grammar categories

Middle-level categories are those which can produce basic low-level ones. Here's the list of them and some suggestions for their structure.

Name	Code	Ukrainian name	Structure
Subject group	SBJ	Група підмета	Subject of the sentence and the set of related modifiers. Is unique for every sentence. The noun produced by this category is the subject while all other are objects.
Predicate group	PRD	Група присудка	Predicate of the sentence and the set of related adverbials. Is unique for every sentence. The verb produced by this category is the predicate.
Entity group	ENT	Група сутності	Noun and the set of related modifiers.
Verbial group	ACT	Група дієслова	Verb and the set of related adverbials.

High-level grammar categories

Every sentence might be split to subsentences. These are "high-level entities". Here's the list of possible entities.

Name	Code	Ukrainian name	Description
Sentence	S	Речення	The most general entity, which represents the sentence itself.
Compound sentence w/ conjunctions	CQS	Складносурядне речення	A compound sentence, which consists of two or more independent simple sentences connected by conjunctions.
Compound sentence w/ no conjunctions	NCS	Безсполучникове речення	A compound sentence, which consists of two or more independent simple sentences without any conjunctions.
Complex sentence	SBS	Складнопідрядне речення	A sentence, which consists of a main and subordinate clause.