English verb conjugation
CAN SUBSERVE

Regular verb: subserve - subserved - subserved

Affirmation

Simple form	V-ing form
I can subserve you can subserve he can subserve we can subserve you can subserve they can subserve	I can be subserving you can be subserving he can be subserving we can be subserving you can be subserving they can be subserving
Perfect	V-ing perfect
I can have subserved you can have subserved he can have subserved we can have subserved you can have subserved they can have subserved	I can have been subserving you can have been subserving he can have been subserving we can have been subserving you can have been subserving they can have been subserving

Negation

Simple form	V-ing form
I cannot subserve you cannot subserve he cannot subserve we cannot subserve you cannot subserve they cannot subserve	I cannot be subserving you cannot be subserving he cannot be subserving we cannot be subserving you cannot be subserving they cannot be subserving
Perfect	V-ing perfect
I cannot have subserved you cannot have subserved he cannot have subserved we cannot have subserved you cannot have subserved they cannot have subserved	I cannot have been subserving you cannot have been subserving he cannot have been subserving we cannot have been subserving you cannot have been subserving they cannot have been subserving

Interrogative form

Simple form	V-ing form
can I subserve? can you subserve? can he subserve? can we subserve? can you subserve? can they subserve?	can I be subserving? can you be subserving? can he be subserving? can we be subserving? can you be subserving? can they be subserving?
Perfect	V-ing perfect
can I have subserved? can you have subserved? can he have subserved? can we have subserved? can you have subserved? can they have subserved?	can I have been subserving? can you have been subserving? can he have been subserving? can we have been subserving? can you have been subserving? can they have been subserving?

Interro-negative form

Simple form	V-ing form
can I not subserve? can you not subserve? can he not subserve? can we not subserve? can you not subserve? can they not subserve?	can I not be subserving? can you not be subserving? can he not be subserving? can we not be subserving? can you not be subserving? can they not be subserving?
Perfect	V-ing perfect
can I not have subserved? can you not have subserved? can he not have subserved? can we not have subserved? can you not have subserved? can they not have subserved?	can I not have been subserving? can you not have been subserving? can he not have been subserving? can we not have been subserving? can you not have been subserving? can they not have been subserving?