I can berate you can berate he can berate we can berate you can berate they can berate
V-ing form
I can be berating you can be berating he can be berating we can be berating you can be berating they can be berating
Perfect
I can have berated you can have berated he can have berated we can have berated you can have berated they can have berated
V-ing perfect
I can have been berating you can have been berating he can have been berating we can have been berating you can have been berating they can have been berating
Negation
Simple form
I can't berate you can't berate he can't berate we can't berate you can't berate they can't berate
V-ing form
I can't be berating you can't be berating he can't be berating we can't be berating you can't be berating they can't be berating
Perfect
I can't have berated you can't have berated he can't have berated we can't have berated you can't have berated they can't have berated
V-ing perfect
I can't have been berating you can't have been berating he can't have been berating we can't have been berating you can't have been berating they can't have been berating
Interrogative form
Simple form
can I berate? can you berate? can he berate? can we berate? can you berate? can they berate?
V-ing form
can I be berating? can you be berating? can he be berating? can we be berating? can you be berating? can they be berating?
Perfect
can I have berated? can you have berated? can he have berated? can we have berated? can you have berated? can they have berated?
V-ing perfect
can I have been berating? can you have been berating? can he have been berating? can we have been berating? can you have been berating? can they have been berating?
Interro-negative form
Simple form
can't I berate? can't you berate? can't he berate? can't we berate? can't you berate? can't they berate?
V-ing form
can't I be berating? can't you be berating? can't he be berating? can't we be berating? can't you be berating? can't they be berating?
Perfect
can't I have berated? can't you have berated? can't he have berated? can't we have berated? can't you have berated? can't they have berated?
V-ing perfect
can't I have been berating? can't you have been berating? can't he have been berating? can't we have been berating? can't you have been berating? can't they have been berating?