I can mean you can mean he can mean we can mean you can mean they can mean
V-ing form
I can be meaning you can be meaning he can be meaning we can be meaning you can be meaning they can be meaning
Perfect
I can have meant you can have meant he can have meant we can have meant you can have meant they can have meant
V-ing perfect
I can have been meaning you can have been meaning he can have been meaning we can have been meaning you can have been meaning they can have been meaning
Negation
Simple form
I cannot mean you cannot mean he cannot mean we cannot mean you cannot mean they cannot mean
V-ing form
I cannot be meaning you cannot be meaning he cannot be meaning we cannot be meaning you cannot be meaning they cannot be meaning
Perfect
I cannot have meant you cannot have meant he cannot have meant we cannot have meant you cannot have meant they cannot have meant
V-ing perfect
I cannot have been meaning you cannot have been meaning he cannot have been meaning we cannot have been meaning you cannot have been meaning they cannot have been meaning
Interrogative form
Simple form
can I mean? can you mean? can he mean? can we mean? can you mean? can they mean?
V-ing form
can I be meaning? can you be meaning? can he be meaning? can we be meaning? can you be meaning? can they be meaning?
Perfect
can I have meant? can you have meant? can he have meant? can we have meant? can you have meant? can they have meant?
V-ing perfect
can I have been meaning? can you have been meaning? can he have been meaning? can we have been meaning? can you have been meaning? can they have been meaning?
Interro-negative form
Simple form
can I not mean? can you not mean? can he not mean? can we not mean? can you not mean? can they not mean?
V-ing form
can I not be meaning? can you not be meaning? can he not be meaning? can we not be meaning? can you not be meaning? can they not be meaning?
Perfect
can I not have meant? can you not have meant? can he not have meant? can we not have meant? can you not have meant? can they not have meant?
V-ing perfect
can I not have been meaning? can you not have been meaning? can he not have been meaning? can we not have been meaning? can you not have been meaning? can they not have been meaning?