English verb conjugation
CAN TAP

Regular verb: tap - tapped - tapped

Affirmation

Simple form	V-ing form
I can tap you can tap he can tap we can tap you can tap they can tap	I can be tapping you can be tapping he can be tapping we can be tapping you can be tapping they can be tapping
Perfect	V-ing perfect
I can have tapped you can have tapped he can have tapped we can have tapped you can have tapped they can have tapped	I can have been tapping you can have been tapping he can have been tapping we can have been tapping you can have been tapping they can have been tapping

Negation

Simple form	V-ing form
I can't tap you can't tap he can't tap we can't tap you can't tap they can't tap	I can't be tapping you can't be tapping he can't be tapping we can't be tapping you can't be tapping they can't be tapping
Perfect	V-ing perfect
I can't have tapped you can't have tapped he can't have tapped we can't have tapped you can't have tapped they can't have tapped	I can't have been tapping you can't have been tapping he can't have been tapping we can't have been tapping you can't have been tapping they can't have been tapping

Interrogative form

Simple form	V-ing form
can I tap? can you tap? can he tap? can we tap? can you tap? can they tap?	can I be tapping? can you be tapping? can he be tapping? can we be tapping? can you be tapping? can they be tapping?
Perfect	V-ing perfect
can I have tapped? can you have tapped? can he have tapped? can we have tapped? can you have tapped? can they have tapped?	can I have been tapping? can you have been tapping? can he have been tapping? can we have been tapping? can you have been tapping? can they have been tapping?

Interro-negative form

Simple form	V-ing form
can't I tap? can't you tap? can't he tap? can't we tap? can't you tap? can't they tap?	can't I be tapping? can't you be tapping? can't he be tapping? can't we be tapping? can't you be tapping? can't they be tapping?
Perfect	V-ing perfect
can't I have tapped? can't you have tapped? can't he have tapped? can't we have tapped? can't you have tapped? can't they have tapped?	can't I have been tapping? can't you have been tapping? can't he have been tapping? can't we have been tapping? can't you have been tapping? can't they have been tapping?