I can gravitate you can gravitate she can gravitate we can gravitate you can gravitate they can gravitate
V-ing form
I can be gravitating you can be gravitating she can be gravitating we can be gravitating you can be gravitating they can be gravitating
Perfect
I can have gravitated you can have gravitated she can have gravitated we can have gravitated you can have gravitated they can have gravitated
V-ing perfect
I can have been gravitating you can have been gravitating she can have been gravitating we can have been gravitating you can have been gravitating they can have been gravitating
Negation
Simple form
I can't gravitate you can't gravitate she can't gravitate we can't gravitate you can't gravitate they can't gravitate
V-ing form
I can't be gravitating you can't be gravitating she can't be gravitating we can't be gravitating you can't be gravitating they can't be gravitating
Perfect
I can't have gravitated you can't have gravitated she can't have gravitated we can't have gravitated you can't have gravitated they can't have gravitated
V-ing perfect
I can't have been gravitating you can't have been gravitating she can't have been gravitating we can't have been gravitating you can't have been gravitating they can't have been gravitating
Interrogative form
Simple form
can I gravitate? can you gravitate? can she gravitate? can we gravitate? can you gravitate? can they gravitate?
V-ing form
can I be gravitating? can you be gravitating? can she be gravitating? can we be gravitating? can you be gravitating? can they be gravitating?
Perfect
can I have gravitated? can you have gravitated? can she have gravitated? can we have gravitated? can you have gravitated? can they have gravitated?
V-ing perfect
can I have been gravitating? can you have been gravitating? can she have been gravitating? can we have been gravitating? can you have been gravitating? can they have been gravitating?
Interro-negative form
Simple form
can't I gravitate? can't you gravitate? can't she gravitate? can't we gravitate? can't you gravitate? can't they gravitate?
V-ing form
can't I be gravitating? can't you be gravitating? can't she be gravitating? can't we be gravitating? can't you be gravitating? can't they be gravitating?
Perfect
can't I have gravitated? can't you have gravitated? can't she have gravitated? can't we have gravitated? can't you have gravitated? can't they have gravitated?
V-ing perfect
can't I have been gravitating? can't you have been gravitating? can't she have been gravitating? can't we have been gravitating? can't you have been gravitating? can't they have been gravitating?