English verb conjugation
MUST HELICOPTER

Regular verb: helicopter - helicoptered - helicoptered

Affirmation

Simple form	V-ing form
I must helicopter you must helicopter he must helicopter we must helicopter you must helicopter they must helicopter	I must be helicoptering you must be helicoptering he must be helicoptering we must be helicoptering you must be helicoptering they must be helicoptering
Perfect	V-ing perfect
I must have helicoptered you must have helicoptered he must have helicoptered we must have helicoptered you must have helicoptered they must have helicoptered	I must have been helicoptering you must have been helicoptering he must have been helicoptering we must have been helicoptering you must have been helicoptering they must have been helicoptering

Negation

Simple form	V-ing form
I mustn't helicopter you mustn't helicopter he mustn't helicopter we mustn't helicopter you mustn't helicopter they mustn't helicopter	I mustn't be helicoptering you mustn't be helicoptering he mustn't be helicoptering we mustn't be helicoptering you mustn't be helicoptering they mustn't be helicoptering
Perfect	V-ing perfect
I mustn't have helicoptered you mustn't have helicoptered he mustn't have helicoptered we mustn't have helicoptered you mustn't have helicoptered they mustn't have helicoptered	I mustn't have been helicoptering you mustn't have been helicoptering he mustn't have been helicoptering we mustn't have been helicoptering you mustn't have been helicoptering they mustn't have been helicoptering

Interrogative form

Simple form	V-ing form
must I helicopter? must you helicopter? must he helicopter? must we helicopter? must you helicopter? must they helicopter?	must I be helicoptering? must you be helicoptering? must he be helicoptering? must we be helicoptering? must you be helicoptering? must they be helicoptering?
Perfect	V-ing perfect
must I have helicoptered? must you have helicoptered? must he have helicoptered? must we have helicoptered? must you have helicoptered? must they have helicoptered?	must I have been helicoptering? must you have been helicoptering? must he have been helicoptering? must we have been helicoptering? must you have been helicoptering? must they have been helicoptering?

Interro-negative form

Simple form	V-ing form
mustn't I helicopter? mustn't you helicopter? mustn't he helicopter? mustn't we helicopter? mustn't you helicopter? mustn't they helicopter?	mustn't I be helicoptering? mustn't you be helicoptering? mustn't he be helicoptering? mustn't we be helicoptering? mustn't you be helicoptering? mustn't they be helicoptering?
Perfect	V-ing perfect
mustn't I have helicoptered? mustn't you have helicoptered? mustn't he have helicoptered? mustn't we have helicoptered? mustn't you have helicoptered? mustn't they have helicoptered?	mustn't I have been helicoptering? mustn't you have been helicoptering? mustn't he have been helicoptering? mustn't we have been helicoptering? mustn't you have been helicoptering? mustn't they have been helicoptering?