The seven terms should be learned through their structure, not just memorized as names.
1. Special conditional: general conditional + non-permanence with respect to the subject itself.
2. Special customary: general customary + non-permanence with respect to the subject itself.
3. Existential non-necessary: generally absolute + non-necessity in itself.
4. Existential non-permanent: generally absolute + non-permanence in itself.
5. Temporal special: time-specific simple + non-permanence in itself.
6. Dispersed temporal special: time-indefinite simple + non-permanence in itself.
7. Special possible: denial of necessity on both opposed sides.
The first six add a qualification to a simple mode; the seventh joins the non-necessity of each contradictory side.