Phonology, lexicon, morphology, syntax and meaning (building blocks)

Bloques de construcción

Putting these together in a hierarchical structure using the sound system as the first building block and working upward from there, gives us the following structure

level of structure	possibilities
Semantics	Infinite
Syntax: sentences	INFINITE
Grammar: rather rigid and fixed. Innovation at this level is low.	finite
Vocabulary, meaningful units: somewhat open-ended but essentially	finite
Sound system, units of sound	finite
Phonetic level	Infinite