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