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