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