I can delay you can delay he can delay we can delay you can delay they can delay
V-ing form
I can be delaying you can be delaying he can be delaying we can be delaying you can be delaying they can be delaying
Perfect
I can have delayed you can have delayed he can have delayed we can have delayed you can have delayed they can have delayed
V-ing perfect
I can have been delaying you can have been delaying he can have been delaying we can have been delaying you can have been delaying they can have been delaying
Negation
Simple form
I can't delay you can't delay he can't delay we can't delay you can't delay they can't delay
V-ing form
I can't be delaying you can't be delaying he can't be delaying we can't be delaying you can't be delaying they can't be delaying
Perfect
I can't have delayed you can't have delayed he can't have delayed we can't have delayed you can't have delayed they can't have delayed
V-ing perfect
I can't have been delaying you can't have been delaying he can't have been delaying we can't have been delaying you can't have been delaying they can't have been delaying
Interrogative form
Simple form
can I delay? can you delay? can he delay? can we delay? can you delay? can they delay?
V-ing form
can I be delaying? can you be delaying? can he be delaying? can we be delaying? can you be delaying? can they be delaying?
Perfect
can I have delayed? can you have delayed? can he have delayed? can we have delayed? can you have delayed? can they have delayed?
V-ing perfect
can I have been delaying? can you have been delaying? can he have been delaying? can we have been delaying? can you have been delaying? can they have been delaying?
Interro-negative form
Simple form
can't I delay? can't you delay? can't he delay? can't we delay? can't you delay? can't they delay?
V-ing form
can't I be delaying? can't you be delaying? can't he be delaying? can't we be delaying? can't you be delaying? can't they be delaying?
Perfect
can't I have delayed? can't you have delayed? can't he have delayed? can't we have delayed? can't you have delayed? can't they have delayed?
V-ing perfect
can't I have been delaying? can't you have been delaying? can't he have been delaying? can't we have been delaying? can't you have been delaying? can't they have been delaying?