English verb conjugation
CAN TERRAFORM

Regular verb: terraform - terraformed - terraformed

Affirmation

Simple form	V-ing form
I can terraform you can terraform he can terraform we can terraform you can terraform they can terraform	I can be terraforming you can be terraforming he can be terraforming we can be terraforming you can be terraforming they can be terraforming
Perfect	V-ing perfect
I can have terraformed you can have terraformed he can have terraformed we can have terraformed you can have terraformed they can have terraformed	I can have been terraforming you can have been terraforming he can have been terraforming we can have been terraforming you can have been terraforming they can have been terraforming

Negation

Simple form	V-ing form
I can't terraform you can't terraform he can't terraform we can't terraform you can't terraform they can't terraform	I can't be terraforming you can't be terraforming he can't be terraforming we can't be terraforming you can't be terraforming they can't be terraforming
Perfect	V-ing perfect
I can't have terraformed you can't have terraformed he can't have terraformed we can't have terraformed you can't have terraformed they can't have terraformed	I can't have been terraforming you can't have been terraforming he can't have been terraforming we can't have been terraforming you can't have been terraforming they can't have been terraforming

Interrogative form

Simple form	V-ing form
can I terraform? can you terraform? can he terraform? can we terraform? can you terraform? can they terraform?	can I be terraforming? can you be terraforming? can he be terraforming? can we be terraforming? can you be terraforming? can they be terraforming?
Perfect	V-ing perfect
can I have terraformed? can you have terraformed? can he have terraformed? can we have terraformed? can you have terraformed? can they have terraformed?	can I have been terraforming? can you have been terraforming? can he have been terraforming? can we have been terraforming? can you have been terraforming? can they have been terraforming?

Interro-negative form

Simple form	V-ing form
can't I terraform? can't you terraform? can't he terraform? can't we terraform? can't you terraform? can't they terraform?	can't I be terraforming? can't you be terraforming? can't he be terraforming? can't we be terraforming? can't you be terraforming? can't they be terraforming?
Perfect	V-ing perfect
can't I have terraformed? can't you have terraformed? can't he have terraformed? can't we have terraformed? can't you have terraformed? can't they have terraformed?	can't I have been terraforming? can't you have been terraforming? can't he have been terraforming? can't we have been terraforming? can't you have been terraforming? can't they have been terraforming?