English verb conjugation CAN MAINTAIN

Regular verb: maintain - maintained - maintained

Affirmation

Simple form

I can maintain
you can maintain
he can maintain
we can maintain
you can maintain
they can maintain

V-ing form

I can be maintaining
you can be maintaining
he can be maintaining
we can be maintaining
you can be maintaining
they can be maintaining

Perfect

I can have maintained
you can have maintained
he can have maintained
we can have maintained
you can have maintained
they can have maintained

V-ing perfect

I can have been maintaining
you can have been maintaining
he can have been maintaining
we can have been maintaining
you can have been maintaining
they can have been maintaining

Negation

Simple form

I cannot maintain
you cannot maintain
he cannot maintain
we cannot maintain
you cannot maintain
they cannot maintain

V-ing form

I cannot be maintaining
you cannot be maintaining
he cannot be maintaining
we cannot be maintaining
you cannot be maintaining
they cannot be maintaining

Perfect

I cannot have maintained
you cannot have maintained
he cannot have maintained
we cannot have maintained
you cannot have maintained
they cannot have maintained

V-ing perfect

I cannot have been maintaining
you cannot have been maintaining
he cannot have been maintaining
we cannot have been maintaining
you cannot have been maintaining
they cannot have been maintaining

Interrogative form

Simple form

can I maintain?
can you maintain?
can he maintain?
can we maintain?
can you maintain?
can they maintain?

V-ing form

can I be maintaining?
can you be maintaining?
can he be maintaining?
can we be maintaining?
can you be maintaining?
can they be maintaining?

Perfect

can I have maintained?
can you have maintained?
can he have maintained?
can we have maintained?
can you have maintained?
can they have maintained?

V-ing perfect

can I have been maintaining?
can you have been maintaining?
can he have been maintaining?
can we have been maintaining?
can you have been maintaining?
can they have been maintaining?

Interro-negative form

Simple form

can I not maintain?
can you not maintain?
can he not maintain?
can we not maintain?
can you not maintain?
can they not maintain?

V-ing form

can I not be maintaining?
can you not be maintaining?
can he not be maintaining?
can we not be maintaining?
can you not be maintaining?
can they not be maintaining?

Perfect

can I not have maintained?
can you not have maintained?
can he not have maintained?
can we not have maintained?
can you not have maintained?
can they not have maintained?

V-ing perfect

can I not have been maintaining?
can you not have been maintaining?
can he not have been maintaining?
can we not have been maintaining?
can you not have been maintaining?
can they not have been maintaining?

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