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Decision Model

  1. Identify the relation first.

  2. If one noun modifies another noun, check genitive first.

  3. If the noun is the directly affected object, check accusative first.

  4. If the noun is a recipient, beneficiary, or experiencer, check dative first.

  5. If the noun expresses role, instrument, companion, or static relative position, check instrumental first.

  6. If the noun expresses topic, being in a place or context, or movement over an area, check locative first.

  7. If the noun expresses absence, lack, source, destination with do, or noun-to-noun dependency, check genitive first.

  8. After the relation is clear, check the governing word.

    • If there is a preposition, use the case required by that preposition pattern.
    • If there is no preposition, check whether the verb normally governs a specific case.

  9. Treat negation as a strong warning sign for genitive, not as a blind automatic rewrite.