Conclusions:

No teacher is a lawyer.

All doctors are students.

Statements:

Statements – 1: All Students are teachers. All teachers are doctors. No doctor is a lawyer.

Statements – 2: All doctors are teachers. All teachers are students. Some Students are lawyers.

Statements – 3: All doctors are teachers. No teachers is student. Some Students are lawyers.

Statements – 4: All doctors are teachers. All teachers are students. No Student is a lawyer

Statements – 5: All doctors are teachers. No teachers is student. No Student is a lawyer.