I can decaffeinate you can decaffeinate he can decaffeinate we can decaffeinate you can decaffeinate they can decaffeinate
V-ing form
I can be decaffeinating you can be decaffeinating he can be decaffeinating we can be decaffeinating you can be decaffeinating they can be decaffeinating
Perfect
I can have decaffeinated you can have decaffeinated he can have decaffeinated we can have decaffeinated you can have decaffeinated they can have decaffeinated
V-ing perfect
I can have been decaffeinating you can have been decaffeinating he can have been decaffeinating we can have been decaffeinating you can have been decaffeinating they can have been decaffeinating
Negation
Simple form
I can't decaffeinate you can't decaffeinate he can't decaffeinate we can't decaffeinate you can't decaffeinate they can't decaffeinate
V-ing form
I can't be decaffeinating you can't be decaffeinating he can't be decaffeinating we can't be decaffeinating you can't be decaffeinating they can't be decaffeinating
Perfect
I can't have decaffeinated you can't have decaffeinated he can't have decaffeinated we can't have decaffeinated you can't have decaffeinated they can't have decaffeinated
V-ing perfect
I can't have been decaffeinating you can't have been decaffeinating he can't have been decaffeinating we can't have been decaffeinating you can't have been decaffeinating they can't have been decaffeinating
Interrogative form
Simple form
can I decaffeinate? can you decaffeinate? can he decaffeinate? can we decaffeinate? can you decaffeinate? can they decaffeinate?
V-ing form
can I be decaffeinating? can you be decaffeinating? can he be decaffeinating? can we be decaffeinating? can you be decaffeinating? can they be decaffeinating?
Perfect
can I have decaffeinated? can you have decaffeinated? can he have decaffeinated? can we have decaffeinated? can you have decaffeinated? can they have decaffeinated?
V-ing perfect
can I have been decaffeinating? can you have been decaffeinating? can he have been decaffeinating? can we have been decaffeinating? can you have been decaffeinating? can they have been decaffeinating?
Interro-negative form
Simple form
can't I decaffeinate? can't you decaffeinate? can't he decaffeinate? can't we decaffeinate? can't you decaffeinate? can't they decaffeinate?
V-ing form
can't I be decaffeinating? can't you be decaffeinating? can't he be decaffeinating? can't we be decaffeinating? can't you be decaffeinating? can't they be decaffeinating?
Perfect
can't I have decaffeinated? can't you have decaffeinated? can't he have decaffeinated? can't we have decaffeinated? can't you have decaffeinated? can't they have decaffeinated?
V-ing perfect
can't I have been decaffeinating? can't you have been decaffeinating? can't he have been decaffeinating? can't we have been decaffeinating? can't you have been decaffeinating? can't they have been decaffeinating?