English verb conjugation
MUST COOPER STH

Regular verb: cooper sth - cooper sthed - cooper sthed

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I must cooper sth you must cooper sth he must cooper sth we must cooper sth you must cooper sth they must cooper sth	I must be cooper sthing you must be cooper sthing he must be cooper sthing we must be cooper sthing you must be cooper sthing they must be cooper sthing
Perfect	V-ing perfect
I must have cooper sthed you must have cooper sthed he must have cooper sthed we must have cooper sthed you must have cooper sthed they must have cooper sthed	I must have been cooper sthing you must have been cooper sthing he must have been cooper sthing we must have been cooper sthing you must have been cooper sthing they must have been cooper sthing

Negation

Simple form	V-ing form
I must not cooper sth you must not cooper sth he must not cooper sth we must not cooper sth you must not cooper sth they must not cooper sth	I must not be cooper sthing you must not be cooper sthing he must not be cooper sthing we must not be cooper sthing you must not be cooper sthing they must not be cooper sthing
Perfect	V-ing perfect
I must not have cooper sthed you must not have cooper sthed he must not have cooper sthed we must not have cooper sthed you must not have cooper sthed they must not have cooper sthed	I must not have been cooper sthing you must not have been cooper sthing he must not have been cooper sthing we must not have been cooper sthing you must not have been cooper sthing they must not have been cooper sthing

Interrogative form

Simple form	V-ing form
must I cooper sth? must you cooper sth? must he cooper sth? must we cooper sth? must you cooper sth? must they cooper sth?	must I be cooper sthing? must you be cooper sthing? must he be cooper sthing? must we be cooper sthing? must you be cooper sthing? must they be cooper sthing?
Perfect	V-ing perfect
must I have cooper sthed? must you have cooper sthed? must he have cooper sthed? must we have cooper sthed? must you have cooper sthed? must they have cooper sthed?	must I have been cooper sthing? must you have been cooper sthing? must he have been cooper sthing? must we have been cooper sthing? must you have been cooper sthing? must they have been cooper sthing?

Interro-negative form

Simple form	V-ing form
must I not cooper sth? must you not cooper sth? must he not cooper sth? must we not cooper sth? must you not cooper sth? must they not cooper sth?	must I not be cooper sthing? must you not be cooper sthing? must he not be cooper sthing? must we not be cooper sthing? must you not be cooper sthing? must they not be cooper sthing?
Perfect	V-ing perfect
must I not have cooper sthed? must you not have cooper sthed? must he not have cooper sthed? must we not have cooper sthed? must you not have cooper sthed? must they not have cooper sthed?	must I not have been cooper sthing? must you not have been cooper sthing? must he not have been cooper sthing? must we not have been cooper sthing? must you not have been cooper sthing? must they not have been cooper sthing?