I can lap you can lap she can lap we can lap you can lap they can lap
V-ing form
I can be lapping you can be lapping she can be lapping we can be lapping you can be lapping they can be lapping
Perfect
I can have lapped you can have lapped she can have lapped we can have lapped you can have lapped they can have lapped
V-ing perfect
I can have been lapping you can have been lapping she can have been lapping we can have been lapping you can have been lapping they can have been lapping
Negation
Simple form
I can't lap you can't lap she can't lap we can't lap you can't lap they can't lap
V-ing form
I can't be lapping you can't be lapping she can't be lapping we can't be lapping you can't be lapping they can't be lapping
Perfect
I can't have lapped you can't have lapped she can't have lapped we can't have lapped you can't have lapped they can't have lapped
V-ing perfect
I can't have been lapping you can't have been lapping she can't have been lapping we can't have been lapping you can't have been lapping they can't have been lapping
Interrogative form
Simple form
can I lap? can you lap? can she lap? can we lap? can you lap? can they lap?
V-ing form
can I be lapping? can you be lapping? can she be lapping? can we be lapping? can you be lapping? can they be lapping?
Perfect
can I have lapped? can you have lapped? can she have lapped? can we have lapped? can you have lapped? can they have lapped?
V-ing perfect
can I have been lapping? can you have been lapping? can she have been lapping? can we have been lapping? can you have been lapping? can they have been lapping?
Interro-negative form
Simple form
can't I lap? can't you lap? can't she lap? can't we lap? can't you lap? can't they lap?
V-ing form
can't I be lapping? can't you be lapping? can't she be lapping? can't we be lapping? can't you be lapping? can't they be lapping?
Perfect
can't I have lapped? can't you have lapped? can't she have lapped? can't we have lapped? can't you have lapped? can't they have lapped?
V-ing perfect
can't I have been lapping? can't you have been lapping? can't she have been lapping? can't we have been lapping? can't you have been lapping? can't they have been lapping?