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 can't aestivate you can't aestivate she can't aestivate we can't aestivate you can't aestivate they can't aestivate
V-ing form
I can't be aestivating you can't be aestivating she can't be aestivating we can't be aestivating you can't be aestivating they can't be aestivating
Perfect
I can't have aestivated you can't have aestivated she can't have aestivated we can't have aestivated you can't have aestivated they can't have aestivated
V-ing perfect
I can't have been aestivating you can't have been aestivating she can't have been aestivating we can't have been aestivating you can't have been aestivating they can't 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't I aestivate? can't you aestivate? can't she aestivate? can't we aestivate? can't you aestivate? can't they aestivate?
V-ing form
can't I be aestivating? can't you be aestivating? can't she be aestivating? can't we be aestivating? can't you be aestivating? can't they be aestivating?
Perfect
can't I have aestivated? can't you have aestivated? can't she have aestivated? can't we have aestivated? can't you have aestivated? can't they have aestivated?
V-ing perfect
can't I have been aestivating? can't you have been aestivating? can't she have been aestivating? can't we have been aestivating? can't you have been aestivating? can't they have been aestivating?