Statements: A. All clerks are superintendents. B. All superintendents are managers. C. All managers are supervisors. Conclusions: I. All supervisors are clerks. II. Some clerks are supervisors. III. Some managers are clerks. IV. All superintendents are clerks.

All the three Premises are Universal Affirmative (A - type)
All clerks are superintendents. ↔ All superintendents are managers.
A + A ⇒ A – type of Conclusion ''All clerks are managers.''
Conclusion III is Converse of it.
All clerks are managers. ↔ All managers are supervisors.
A + A ⇒ A – type of Conclusion ''All clerk are supervisors.''
Conclusions II is its Implication.
All superintendents are managers. ↔ All managers are supervisors.
A + A ⇒ A – type of Conclusion ''All superintendents are supervisors.''
Conclusions II and III follow