English verb conjugation
MUST CROP

Regular verb: crop - cropped - cropped

Affirmation

Simple form	V-ing form
I must crop you must crop he must crop we must crop you must crop they must crop	I must be cropping you must be cropping he must be cropping we must be cropping you must be cropping they must be cropping
Perfect	V-ing perfect
I must have cropped you must have cropped he must have cropped we must have cropped you must have cropped they must have cropped	I must have been cropping you must have been cropping he must have been cropping we must have been cropping you must have been cropping they must have been cropping

Negation

Simple form	V-ing form
I mustn't crop you mustn't crop he mustn't crop we mustn't crop you mustn't crop they mustn't crop	I mustn't be cropping you mustn't be cropping he mustn't be cropping we mustn't be cropping you mustn't be cropping they mustn't be cropping
Perfect	V-ing perfect
I mustn't have cropped you mustn't have cropped he mustn't have cropped we mustn't have cropped you mustn't have cropped they mustn't have cropped	I mustn't have been cropping you mustn't have been cropping he mustn't have been cropping we mustn't have been cropping you mustn't have been cropping they mustn't have been cropping

Interrogative form

Simple form	V-ing form
must I crop? must you crop? must he crop? must we crop? must you crop? must they crop?	must I be cropping? must you be cropping? must he be cropping? must we be cropping? must you be cropping? must they be cropping?
Perfect	V-ing perfect
must I have cropped? must you have cropped? must he have cropped? must we have cropped? must you have cropped? must they have cropped?	must I have been cropping? must you have been cropping? must he have been cropping? must we have been cropping? must you have been cropping? must they have been cropping?

Interro-negative form

Simple form	V-ing form
mustn't I crop? mustn't you crop? mustn't he crop? mustn't we crop? mustn't you crop? mustn't they crop?	mustn't I be cropping? mustn't you be cropping? mustn't he be cropping? mustn't we be cropping? mustn't you be cropping? mustn't they be cropping?
Perfect	V-ing perfect
mustn't I have cropped? mustn't you have cropped? mustn't he have cropped? mustn't we have cropped? mustn't you have cropped? mustn't they have cropped?	mustn't I have been cropping? mustn't you have been cropping? mustn't he have been cropping? mustn't we have been cropping? mustn't you have been cropping? mustn't they have been cropping?