English verb conjugation
CAN COMPUTE

Regular verb: compute - computed - computed

Affirmation

Simple form	V-ing form
I can compute you can compute he can compute we can compute you can compute they can compute	I can be computing you can be computing he can be computing we can be computing you can be computing they can be computing
Perfect	V-ing perfect
I can have computed you can have computed he can have computed we can have computed you can have computed they can have computed	I can have been computing you can have been computing he can have been computing we can have been computing you can have been computing they can have been computing

Negation

Simple form	V-ing form
I cannot compute you cannot compute he cannot compute we cannot compute you cannot compute they cannot compute	I cannot be computing you cannot be computing he cannot be computing we cannot be computing you cannot be computing they cannot be computing
Perfect	V-ing perfect
I cannot have computed you cannot have computed he cannot have computed we cannot have computed you cannot have computed they cannot have computed	I cannot have been computing you cannot have been computing he cannot have been computing we cannot have been computing you cannot have been computing they cannot have been computing

Interrogative form

Simple form	V-ing form
can I compute? can you compute? can he compute? can we compute? can you compute? can they compute?	can I be computing? can you be computing? can he be computing? can we be computing? can you be computing? can they be computing?
Perfect	V-ing perfect
can I have computed? can you have computed? can he have computed? can we have computed? can you have computed? can they have computed?	can I have been computing? can you have been computing? can he have been computing? can we have been computing? can you have been computing? can they have been computing?

Interro-negative form

Simple form	V-ing form
can I not compute? can you not compute? can he not compute? can we not compute? can you not compute? can they not compute?	can I not be computing? can you not be computing? can he not be computing? can we not be computing? can you not be computing? can they not be computing?
Perfect	V-ing perfect
can I not have computed? can you not have computed? can he not have computed? can we not have computed? can you not have computed? can they not have computed?	can I not have been computing? can you not have been computing? can he not have been computing? can we not have been computing? can you not have been computing? can they not have been computing?