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