Regular verb: cooper sth - cooper sthed - cooper sthed
Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must cooper sth you must cooper sth she must cooper sth we must cooper sth you must cooper sth they must cooper sth
V-ing form
I must be cooper sthing you must be cooper sthing she must be cooper sthing we must be cooper sthing you must be cooper sthing they must be cooper sthing
Perfect
I must have cooper sthed you must have cooper sthed she must have cooper sthed we must have cooper sthed you must have cooper sthed they must have cooper sthed
V-ing perfect
I must have been cooper sthing you must have been cooper sthing she 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
I mustn't cooper sth you mustn't cooper sth she mustn't cooper sth we mustn't cooper sth you mustn't cooper sth they mustn't cooper sth
V-ing form
I mustn't be cooper sthing you mustn't be cooper sthing she mustn't be cooper sthing we mustn't be cooper sthing you mustn't be cooper sthing they mustn't be cooper sthing
Perfect
I mustn't have cooper sthed you mustn't have cooper sthed she mustn't have cooper sthed we mustn't have cooper sthed you mustn't have cooper sthed they mustn't have cooper sthed
V-ing perfect
I mustn't have been cooper sthing you mustn't have been cooper sthing she mustn't have been cooper sthing we mustn't have been cooper sthing you mustn't have been cooper sthing they mustn't have been cooper sthing
Interrogative form
Simple form
must I cooper sth? must you cooper sth? must she cooper sth? must we cooper sth? must you cooper sth? must they cooper sth?
V-ing form
must I be cooper sthing? must you be cooper sthing? must she be cooper sthing? must we be cooper sthing? must you be cooper sthing? must they be cooper sthing?
Perfect
must I have cooper sthed? must you have cooper sthed? must she have cooper sthed? must we have cooper sthed? must you have cooper sthed? must they have cooper sthed?
V-ing perfect
must I have been cooper sthing? must you have been cooper sthing? must she 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
mustn't I cooper sth? mustn't you cooper sth? mustn't she cooper sth? mustn't we cooper sth? mustn't you cooper sth? mustn't they cooper sth?
V-ing form
mustn't I be cooper sthing? mustn't you be cooper sthing? mustn't she be cooper sthing? mustn't we be cooper sthing? mustn't you be cooper sthing? mustn't they be cooper sthing?
Perfect
mustn't I have cooper sthed? mustn't you have cooper sthed? mustn't she have cooper sthed? mustn't we have cooper sthed? mustn't you have cooper sthed? mustn't they have cooper sthed?
V-ing perfect
mustn't I have been cooper sthing? mustn't you have been cooper sthing? mustn't she have been cooper sthing? mustn't we have been cooper sthing? mustn't you have been cooper sthing? mustn't they have been cooper sthing?