English verb conjugation CAN UNBUTTON

Regular verb: unbutton - unbuttoned - unbuttoned

Affirmation

Simple form

I can unbutton
you can unbutton
he can unbutton
we can unbutton
you can unbutton
they can unbutton

V-ing form

I can be unbuttoning
you can be unbuttoning
he can be unbuttoning
we can be unbuttoning
you can be unbuttoning
they can be unbuttoning

Perfect

I can have unbuttoned
you can have unbuttoned
he can have unbuttoned
we can have unbuttoned
you can have unbuttoned
they can have unbuttoned

V-ing perfect

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

Negation

Simple form

I cannot unbutton
you cannot unbutton
he cannot unbutton
we cannot unbutton
you cannot unbutton
they cannot unbutton

V-ing form

I cannot be unbuttoning
you cannot be unbuttoning
he cannot be unbuttoning
we cannot be unbuttoning
you cannot be unbuttoning
they cannot be unbuttoning

Perfect

I cannot have unbuttoned
you cannot have unbuttoned
he cannot have unbuttoned
we cannot have unbuttoned
you cannot have unbuttoned
they cannot have unbuttoned

V-ing perfect

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

Interrogative form

Simple form

can I unbutton?
can you unbutton?
can he unbutton?
can we unbutton?
can you unbutton?
can they unbutton?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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