I can ulcerate you can ulcerate he can ulcerate we can ulcerate you can ulcerate they can ulcerate
Forme en V-ing
I can be ulcerating you can be ulcerating he can be ulcerating we can be ulcerating you can be ulcerating they can be ulcerating
Perfect
I can have ulcerated you can have ulcerated he can have ulcerated we can have ulcerated you can have ulcerated they can have ulcerated
Perfect en V-ing
I can have been ulcerating you can have been ulcerating he can have been ulcerating we can have been ulcerating you can have been ulcerating they can have been ulcerating
Négation
Forme simple
I can't ulcerate you can't ulcerate he can't ulcerate we can't ulcerate you can't ulcerate they can't ulcerate
Forme en V-ing
I can't be ulcerating you can't be ulcerating he can't be ulcerating we can't be ulcerating you can't be ulcerating they can't be ulcerating
Perfect
I can't have ulcerated you can't have ulcerated he can't have ulcerated we can't have ulcerated you can't have ulcerated they can't have ulcerated
Perfect en V-ing
I can't have been ulcerating you can't have been ulcerating he can't have been ulcerating we can't have been ulcerating you can't have been ulcerating they can't have been ulcerating
Forme interrogative
Forme simple
can I ulcerate? can you ulcerate? can he ulcerate? can we ulcerate? can you ulcerate? can they ulcerate?
Forme en V-ing
can I be ulcerating? can you be ulcerating? can he be ulcerating? can we be ulcerating? can you be ulcerating? can they be ulcerating?
Perfect
can I have ulcerated? can you have ulcerated? can he have ulcerated? can we have ulcerated? can you have ulcerated? can they have ulcerated?
Perfect en V-ing
can I have been ulcerating? can you have been ulcerating? can he have been ulcerating? can we have been ulcerating? can you have been ulcerating? can they have been ulcerating?
Forme interro-négative
Forme simple
can't I ulcerate? can't you ulcerate? can't he ulcerate? can't we ulcerate? can't you ulcerate? can't they ulcerate?
Forme en V-ing
can't I be ulcerating? can't you be ulcerating? can't he be ulcerating? can't we be ulcerating? can't you be ulcerating? can't they be ulcerating?
Perfect
can't I have ulcerated? can't you have ulcerated? can't he have ulcerated? can't we have ulcerated? can't you have ulcerated? can't they have ulcerated?
Perfect en V-ing
can't I have been ulcerating? can't you have been ulcerating? can't he have been ulcerating? can't we have been ulcerating? can't you have been ulcerating? can't they have been ulcerating?