can compute
Regular verb: compute - computed- computed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?