I can berry you can berry she can berry we can berry you can berry they can berry
V-ing form
I can be berrying you can be berrying she can be berrying we can be berrying you can be berrying they can be berrying
Perfect
I can have berried you can have berried she can have berried we can have berried you can have berried they can have berried
V-ing perfect
I can have been berrying you can have been berrying she can have been berrying we can have been berrying you can have been berrying they can have been berrying
Negation
Simple form
I can't berry you can't berry she can't berry we can't berry you can't berry they can't berry
V-ing form
I can't be berrying you can't be berrying she can't be berrying we can't be berrying you can't be berrying they can't be berrying
Perfect
I can't have berried you can't have berried she can't have berried we can't have berried you can't have berried they can't have berried
V-ing perfect
I can't have been berrying you can't have been berrying she can't have been berrying we can't have been berrying you can't have been berrying they can't have been berrying
Interrogative form
Simple form
can I berry? can you berry? can she berry? can we berry? can you berry? can they berry?
V-ing form
can I be berrying? can you be berrying? can she be berrying? can we be berrying? can you be berrying? can they be berrying?
Perfect
can I have berried? can you have berried? can she have berried? can we have berried? can you have berried? can they have berried?
V-ing perfect
can I have been berrying? can you have been berrying? can she have been berrying? can we have been berrying? can you have been berrying? can they have been berrying?
Interro-negative form
Simple form
can't I berry? can't you berry? can't she berry? can't we berry? can't you berry? can't they berry?
V-ing form
can't I be berrying? can't you be berrying? can't she be berrying? can't we be berrying? can't you be berrying? can't they be berrying?
Perfect
can't I have berried? can't you have berried? can't she have berried? can't we have berried? can't you have berried? can't they have berried?
V-ing perfect
can't I have been berrying? can't you have been berrying? can't she have been berrying? can't we have been berrying? can't you have been berrying? can't they have been berrying?