English verb conjugation
MUST SUFFER

Regular verb: suffer - suffered - suffered

Affirmation

Simple form	V-ing form
I must suffer you must suffer she must suffer we must suffer you must suffer they must suffer	I must be suffering you must be suffering she must be suffering we must be suffering you must be suffering they must be suffering
Perfect	V-ing perfect
I must have suffered you must have suffered she must have suffered we must have suffered you must have suffered they must have suffered	I must have been suffering you must have been suffering she must have been suffering we must have been suffering you must have been suffering they must have been suffering

Negation

Simple form	V-ing form
I must not suffer you must not suffer she must not suffer we must not suffer you must not suffer they must not suffer	I must not be suffering you must not be suffering she must not be suffering we must not be suffering you must not be suffering they must not be suffering
Perfect	V-ing perfect
I must not have suffered you must not have suffered she must not have suffered we must not have suffered you must not have suffered they must not have suffered	I must not have been suffering you must not have been suffering she must not have been suffering we must not have been suffering you must not have been suffering they must not have been suffering

Interrogative form

Simple form	V-ing form
must I suffer? must you suffer? must she suffer? must we suffer? must you suffer? must they suffer?	must I be suffering? must you be suffering? must she be suffering? must we be suffering? must you be suffering? must they be suffering?
Perfect	V-ing perfect
must I have suffered? must you have suffered? must she have suffered? must we have suffered? must you have suffered? must they have suffered?	must I have been suffering? must you have been suffering? must she have been suffering? must we have been suffering? must you have been suffering? must they have been suffering?

Interro-negative form

Simple form	V-ing form
must I not suffer? must you not suffer? must she not suffer? must we not suffer? must you not suffer? must they not suffer?	must I not be suffering? must you not be suffering? must she not be suffering? must we not be suffering? must you not be suffering? must they not be suffering?
Perfect	V-ing perfect
must I not have suffered? must you not have suffered? must she not have suffered? must we not have suffered? must you not have suffered? must they not have suffered?	must I not have been suffering? must you not have been suffering? must she not have been suffering? must we not have been suffering? must you not have been suffering? must they not have been suffering?