I can strap you can strap he can strap we can strap you can strap they can strap
V-ing form
I can be strapping you can be strapping he can be strapping we can be strapping you can be strapping they can be strapping
Perfect
I can have strapped you can have strapped he can have strapped we can have strapped you can have strapped they can have strapped
V-ing perfect
I can have been strapping you can have been strapping he can have been strapping we can have been strapping you can have been strapping they can have been strapping
Negation
Simple form
I can't strap you can't strap he can't strap we can't strap you can't strap they can't strap
V-ing form
I can't be strapping you can't be strapping he can't be strapping we can't be strapping you can't be strapping they can't be strapping
Perfect
I can't have strapped you can't have strapped he can't have strapped we can't have strapped you can't have strapped they can't have strapped
V-ing perfect
I can't have been strapping you can't have been strapping he can't have been strapping we can't have been strapping you can't have been strapping they can't have been strapping
Interrogative form
Simple form
can I strap? can you strap? can he strap? can we strap? can you strap? can they strap?
V-ing form
can I be strapping? can you be strapping? can he be strapping? can we be strapping? can you be strapping? can they be strapping?
Perfect
can I have strapped? can you have strapped? can he have strapped? can we have strapped? can you have strapped? can they have strapped?
V-ing perfect
can I have been strapping? can you have been strapping? can he have been strapping? can we have been strapping? can you have been strapping? can they have been strapping?
Interro-negative form
Simple form
can't I strap? can't you strap? can't he strap? can't we strap? can't you strap? can't they strap?
V-ing form
can't I be strapping? can't you be strapping? can't he be strapping? can't we be strapping? can't you be strapping? can't they be strapping?
Perfect
can't I have strapped? can't you have strapped? can't he have strapped? can't we have strapped? can't you have strapped? can't they have strapped?
V-ing perfect
can't I have been strapping? can't you have been strapping? can't he have been strapping? can't we have been strapping? can't you have been strapping? can't they have been strapping?