Statements:
(a) All pens are papers.
(b) No eraser is a paper.
Conclusions:
I. No eraser is a pen.
II. Some papers are pens.

(i) All pens are papers ? Universal Affirmative (A-type).
(ii) Some houses are lakes ? Particular Affirmative (I-type).
(iii) No eraser is paper ? Universal Negative (E-type).
(iv) Some erasers are not papers ? Particular Negative (O-type).
All pens are papers. ? No paper is an eraser.
A + E ? E-type of Conclusion. "No pen is an eraser".
Conclusion I is Converse of it.
Conclusion II is Converse of the first Premise.