English verb conjugation CAN FIRM

Regular verb: firm - firmed - firmed

Affirmation

Simple form

I can firm
you can firm
he can firm
we can firm
you can firm
they can firm

V-ing form

I can be firming
you can be firming
he can be firming
we can be firming
you can be firming
they can be firming

Perfect

I can have firmed
you can have firmed
he can have firmed
we can have firmed
you can have firmed
they can have firmed

V-ing perfect

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

Negation

Simple form

I cannot firm
you cannot firm
he cannot firm
we cannot firm
you cannot firm
they cannot firm

V-ing form

I cannot be firming
you cannot be firming
he cannot be firming
we cannot be firming
you cannot be firming
they cannot be firming

Perfect

I cannot have firmed
you cannot have firmed
he cannot have firmed
we cannot have firmed
you cannot have firmed
they cannot have firmed

V-ing perfect

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

Interrogative form

Simple form

can I firm?
can you firm?
can he firm?
can we firm?
can you firm?
can they firm?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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