| nº | perspective | comment | examples |
|---|---|---|---|
| 1 | Grammatical units | units constituting grammatical levels | sub-morpheme, morpheme, stem, word, phrase, clause, sentence |
| 2 | Grammatical categories | distributional classes of units at each level. | verb stem, finite verb, verb phrase, verbal clause, cleft-sentence |
| 3 | Syntagmatic structure | ||
| 3.1 | Relations in constructions | sociation, dependency | apposition, direct object |
| 3.2 | Distribution | position, obligatoriness of components | optional prenominal position |
| 3.3 | Operators | grammatical formative forming a binary construction with the operand | sign with segmental representation, affixation, modification |
| 4 | Paradigmatic structure | ||
| 4.1 | Members of the paradigm | values of a grammatical category | case-number suffixes |
| 4.2 | Variation in members of the paradigm | allomorphy in the operator | number allomorphy conditioned by gender |
| 4.3 | Variation in the operand | allomorphy of stem | noun stem allomorphy conditioned by number |