English verb conjugation CAN SPIFF

Regular verb: spiff - spiffed - spiffed

Affirmation

Simple form

I can spiff
you can spiff
he can spiff
we can spiff
you can spiff
they can spiff

V-ing form

I can be spiffing
you can be spiffing
he can be spiffing
we can be spiffing
you can be spiffing
they can be spiffing

Perfect

I can have spiffed
you can have spiffed
he can have spiffed
we can have spiffed
you can have spiffed
they can have spiffed

V-ing perfect

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

Negation

Simple form

I can't spiff
you can't spiff
he can't spiff
we can't spiff
you can't spiff
they can't spiff

V-ing form

I can't be spiffing
you can't be spiffing
he can't be spiffing
we can't be spiffing
you can't be spiffing
they can't be spiffing

Perfect

I can't have spiffed
you can't have spiffed
he can't have spiffed
we can't have spiffed
you can't have spiffed
they can't have spiffed

V-ing perfect

I can't have been spiffing
you can't have been spiffing
he can't have been spiffing
we can't have been spiffing
you can't have been spiffing
they can't have been spiffing

Interrogative form

Simple form

can I spiff?
can you spiff?
can he spiff?
can we spiff?
can you spiff?
can they spiff?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

can't I spiff?
can't you spiff?
can't he spiff?
can't we spiff?
can't you spiff?
can't they spiff?

V-ing form

can't I be spiffing?
can't you be spiffing?
can't he be spiffing?
can't we be spiffing?
can't you be spiffing?
can't they be spiffing?

Perfect

can't I have spiffed?
can't you have spiffed?
can't he have spiffed?
can't we have spiffed?
can't you have spiffed?
can't they have spiffed?

V-ing perfect

can't I have been spiffing?
can't you have been spiffing?
can't he have been spiffing?
can't we have been spiffing?
can't you have been spiffing?
can't they have been spiffing?

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