English verb conjugation CAN PUFF

Regular verb: puff - puffed - puffed

Affirmation

Simple form

I can puff
you can puff
she can puff
we can puff
you can puff
they can puff

V-ing form

I can be puffing
you can be puffing
she can be puffing
we can be puffing
you can be puffing
they can be puffing

Perfect

I can have puffed
you can have puffed
she can have puffed
we can have puffed
you can have puffed
they can have puffed

V-ing perfect

I can have been puffing
you can have been puffing
she can have been puffing
we can have been puffing
you can have been puffing
they can have been puffing

Negation

Simple form

I can't puff
you can't puff
she can't puff
we can't puff
you can't puff
they can't puff

V-ing form

I can't be puffing
you can't be puffing
she can't be puffing
we can't be puffing
you can't be puffing
they can't be puffing

Perfect

I can't have puffed
you can't have puffed
she can't have puffed
we can't have puffed
you can't have puffed
they can't have puffed

V-ing perfect

I can't have been puffing
you can't have been puffing
she can't have been puffing
we can't have been puffing
you can't have been puffing
they can't have been puffing

Interrogative form

Simple form

can I puff?
can you puff?
can she puff?
can we puff?
can you puff?
can they puff?

V-ing form

can I be puffing?
can you be puffing?
can she be puffing?
can we be puffing?
can you be puffing?
can they be puffing?

Perfect

can I have puffed?
can you have puffed?
can she have puffed?
can we have puffed?
can you have puffed?
can they have puffed?

V-ing perfect

can I have been puffing?
can you have been puffing?
can she have been puffing?
can we have been puffing?
can you have been puffing?
can they have been puffing?

Interro-negative form

Simple form

can't I puff?
can't you puff?
can't she puff?
can't we puff?
can't you puff?
can't they puff?

V-ing form

can't I be puffing?
can't you be puffing?
can't she be puffing?
can't we be puffing?
can't you be puffing?
can't they be puffing?

Perfect

can't I have puffed?
can't you have puffed?
can't she have puffed?
can't we have puffed?
can't you have puffed?
can't they have puffed?

V-ing perfect

can't I have been puffing?
can't you have been puffing?
can't she have been puffing?
can't we have been puffing?
can't you have been puffing?
can't they have been puffing?

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