Statements: (a) All peacocks are lions. (b) Some tigers are peacocks. Conclusions: I. Some lions are not tigers. II. All tigers are lions. III. Some tigers are lions. IV. All peacocks are tigers.

(i) All peacocks are lions → Universal Affirmative (A-type).
(ii) Some tigers are peacocks → Particular Affirmative (I-type).
(iii) No tiger is a lion → Universal Negative (E-type).
(iv) Some tigers are not lions → Particular Negative (O-type).
Some tigers are peacocks. ↔ All peacocks are lions.
I + A ⇒ I-type of Conclusion. "Some tigers are lions".
This is Conclusion III.