English verb conjugation CAN TIFF

Regular verb: tiff - tiffed - tiffed

Affirmation

Simple form

I can tiff
you can tiff
she can tiff
we can tiff
you can tiff
they can tiff

V-ing form

I can be tiffing
you can be tiffing
she can be tiffing
we can be tiffing
you can be tiffing
they can be tiffing

Perfect

I can have tiffed
you can have tiffed
she can have tiffed
we can have tiffed
you can have tiffed
they can have tiffed

V-ing perfect

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

Negation

Simple form

I cannot tiff
you cannot tiff
she cannot tiff
we cannot tiff
you cannot tiff
they cannot tiff

V-ing form

I cannot be tiffing
you cannot be tiffing
she cannot be tiffing
we cannot be tiffing
you cannot be tiffing
they cannot be tiffing

Perfect

I cannot have tiffed
you cannot have tiffed
she cannot have tiffed
we cannot have tiffed
you cannot have tiffed
they cannot have tiffed

V-ing perfect

I cannot have been tiffing
you cannot have been tiffing
she cannot have been tiffing
we cannot have been tiffing
you cannot have been tiffing
they cannot have been tiffing

Interrogative form

Simple form

can I tiff?
can you tiff?
can she tiff?
can we tiff?
can you tiff?
can they tiff?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

can I not tiff?
can you not tiff?
can she not tiff?
can we not tiff?
can you not tiff?
can they not tiff?

V-ing form

can I not be tiffing?
can you not be tiffing?
can she not be tiffing?
can we not be tiffing?
can you not be tiffing?
can they not be tiffing?

Perfect

can I not have tiffed?
can you not have tiffed?
can she not have tiffed?
can we not have tiffed?
can you not have tiffed?
can they not have tiffed?

V-ing perfect

can I not have been tiffing?
can you not have been tiffing?
can she not have been tiffing?
can we not have been tiffing?
can you not have been tiffing?
can they not have been tiffing?

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