English verb conjugation
MUST SUFFER

Regular verb: suffer - suffered - suffered

Affirmation

Simple form	V-ing form
I must suffer you must suffer he must suffer we must suffer you must suffer they must suffer	I must be suffering you must be suffering he 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 he 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 he 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 mustn't suffer you mustn't suffer he mustn't suffer we mustn't suffer you mustn't suffer they mustn't suffer	I mustn't be suffering you mustn't be suffering he mustn't be suffering we mustn't be suffering you mustn't be suffering they mustn't be suffering
Perfect	V-ing perfect
I mustn't have suffered you mustn't have suffered he mustn't have suffered we mustn't have suffered you mustn't have suffered they mustn't have suffered	I mustn't have been suffering you mustn't have been suffering he mustn't have been suffering we mustn't have been suffering you mustn't have been suffering they mustn't have been suffering

Interrogative form

Simple form	V-ing form
must I suffer? must you suffer? must he suffer? must we suffer? must you suffer? must they suffer?	must I be suffering? must you be suffering? must he 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 he 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 he 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
mustn't I suffer? mustn't you suffer? mustn't he suffer? mustn't we suffer? mustn't you suffer? mustn't they suffer?	mustn't I be suffering? mustn't you be suffering? mustn't he be suffering? mustn't we be suffering? mustn't you be suffering? mustn't they be suffering?
Perfect	V-ing perfect
mustn't I have suffered? mustn't you have suffered? mustn't he have suffered? mustn't we have suffered? mustn't you have suffered? mustn't they have suffered?	mustn't I have been suffering? mustn't you have been suffering? mustn't he have been suffering? mustn't we have been suffering? mustn't you have been suffering? mustn't they have been suffering?