I can document you can document he can document we can document you can document they can document
V-ing form
I can be documenting you can be documenting he can be documenting we can be documenting you can be documenting they can be documenting
Perfect
I can have documented you can have documented he can have documented we can have documented you can have documented they can have documented
V-ing perfect
I can have been documenting you can have been documenting he can have been documenting we can have been documenting you can have been documenting they can have been documenting
Negation
Simple form
I can't document you can't document he can't document we can't document you can't document they can't document
V-ing form
I can't be documenting you can't be documenting he can't be documenting we can't be documenting you can't be documenting they can't be documenting
Perfect
I can't have documented you can't have documented he can't have documented we can't have documented you can't have documented they can't have documented
V-ing perfect
I can't have been documenting you can't have been documenting he can't have been documenting we can't have been documenting you can't have been documenting they can't have been documenting
Interrogative form
Simple form
can I document? can you document? can he document? can we document? can you document? can they document?
V-ing form
can I be documenting? can you be documenting? can he be documenting? can we be documenting? can you be documenting? can they be documenting?
Perfect
can I have documented? can you have documented? can he have documented? can we have documented? can you have documented? can they have documented?
V-ing perfect
can I have been documenting? can you have been documenting? can he have been documenting? can we have been documenting? can you have been documenting? can they have been documenting?
Interro-negative form
Simple form
can't I document? can't you document? can't he document? can't we document? can't you document? can't they document?
V-ing form
can't I be documenting? can't you be documenting? can't he be documenting? can't we be documenting? can't you be documenting? can't they be documenting?
Perfect
can't I have documented? can't you have documented? can't he have documented? can't we have documented? can't you have documented? can't they have documented?
V-ing perfect
can't I have been documenting? can't you have been documenting? can't he have been documenting? can't we have been documenting? can't you have been documenting? can't they have been documenting?