I can read you can read she can read we can read you can read they can read
V-ing form
I can be reading you can be reading she can be reading we can be reading you can be reading they can be reading
Perfect
I can have read you can have read she can have read we can have read you can have read they can have read
V-ing perfect
I can have been reading you can have been reading she can have been reading we can have been reading you can have been reading they can have been reading
Negation
Simple form
I cannot read you cannot read she cannot read we cannot read you cannot read they cannot read
V-ing form
I cannot be reading you cannot be reading she cannot be reading we cannot be reading you cannot be reading they cannot be reading
Perfect
I cannot have read you cannot have read she cannot have read we cannot have read you cannot have read they cannot have read
V-ing perfect
I cannot have been reading you cannot have been reading she cannot have been reading we cannot have been reading you cannot have been reading they cannot have been reading
Interrogative form
Simple form
can I read? can you read? can she read? can we read? can you read? can they read?
V-ing form
can I be reading? can you be reading? can she be reading? can we be reading? can you be reading? can they be reading?
Perfect
can I have read? can you have read? can she have read? can we have read? can you have read? can they have read?
V-ing perfect
can I have been reading? can you have been reading? can she have been reading? can we have been reading? can you have been reading? can they have been reading?
Interro-negative form
Simple form
can I not read? can you not read? can she not read? can we not read? can you not read? can they not read?
V-ing form
can I not be reading? can you not be reading? can she not be reading? can we not be reading? can you not be reading? can they not be reading?
Perfect
can I not have read? can you not have read? can she not have read? can we not have read? can you not have read? can they not have read?
V-ing perfect
can I not have been reading? can you not have been reading? can she not have been reading? can we not have been reading? can you not have been reading? can they not have been reading?