I can deforce you can deforce he can deforce we can deforce you can deforce they can deforce
V-ing form
I can be deforcing you can be deforcing he can be deforcing we can be deforcing you can be deforcing they can be deforcing
Perfect
I can have deforced you can have deforced he can have deforced we can have deforced you can have deforced they can have deforced
V-ing perfect
I can have been deforcing you can have been deforcing he can have been deforcing we can have been deforcing you can have been deforcing they can have been deforcing
Negation
Simple form
I can't deforce you can't deforce he can't deforce we can't deforce you can't deforce they can't deforce
V-ing form
I can't be deforcing you can't be deforcing he can't be deforcing we can't be deforcing you can't be deforcing they can't be deforcing
Perfect
I can't have deforced you can't have deforced he can't have deforced we can't have deforced you can't have deforced they can't have deforced
V-ing perfect
I can't have been deforcing you can't have been deforcing he can't have been deforcing we can't have been deforcing you can't have been deforcing they can't have been deforcing
Interrogative form
Simple form
can I deforce? can you deforce? can he deforce? can we deforce? can you deforce? can they deforce?
V-ing form
can I be deforcing? can you be deforcing? can he be deforcing? can we be deforcing? can you be deforcing? can they be deforcing?
Perfect
can I have deforced? can you have deforced? can he have deforced? can we have deforced? can you have deforced? can they have deforced?
V-ing perfect
can I have been deforcing? can you have been deforcing? can he have been deforcing? can we have been deforcing? can you have been deforcing? can they have been deforcing?
Interro-negative form
Simple form
can't I deforce? can't you deforce? can't he deforce? can't we deforce? can't you deforce? can't they deforce?
V-ing form
can't I be deforcing? can't you be deforcing? can't he be deforcing? can't we be deforcing? can't you be deforcing? can't they be deforcing?
Perfect
can't I have deforced? can't you have deforced? can't he have deforced? can't we have deforced? can't you have deforced? can't they have deforced?
V-ing perfect
can't I have been deforcing? can't you have been deforcing? can't he have been deforcing? can't we have been deforcing? can't you have been deforcing? can't they have been deforcing?