could aestivate
Regular verb: aestivate - aestivated- aestivated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could aestivate
you could aestivate
he could aestivate
we could aestivate
you could aestivate
they could aestivate 	I could be aestivating
you could be aestivating
he could be aestivating
we could be aestivating
you could be aestivating
they could be aestivating	I could have aestivated
you could have aestivated
he could have aestivated
we could have aestivated
you could have aestivated
they could have aestivated	I could have been aestivating
you could have been aestivating
he could have been aestivating
we could have been aestivating
you could have been aestivating
they could have been aestivating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not aestivate
you could not aestivate
he could not aestivate
we could not aestivate
you could not aestivate
they could not aestivate 	I could not be aestivating
you could not be aestivating
he could not be aestivating
we could not be aestivating
you could not be aestivating
they could not be aestivating	I could not have aestivated
you could not have aestivated
he could not have aestivated
we could not have aestivated
you could not have aestivated
they could not have aestivated	I could not have been aestivating
you could not have been aestivating
he could not have been aestivating
we could not have been aestivating
you could not have been aestivating
they could not have been aestivating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I aestivate?
could you aestivate?
could he aestivate?
could we aestivate?
could you aestivate?
could they aestivate? 	could I be aestivating?
could you be aestivating?
could he be aestivating?
could we be aestivating?
could you be aestivating?
could they be aestivating? 	could I have aestivated?
could you have aestivated?
could he have aestivated?
could we have aestivated?
could you have aestivated?
could they have aestivated? 	could I have been aestivating?
could you have been aestivating?
could he have been aestivating?
could we have been aestivating?
could you have been aestivating?
could they have been aestivating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not aestivate?
could you not aestivate?
could he not aestivate?
could we not aestivate?
could you not aestivate?
could they not aestivate? 	could I not be aestivating?
could you not be aestivating?
could he not be aestivating?
could we not be aestivating?
could you not be aestivating?
could they not be aestivating? 	could I not have aestivated?
could you not have aestivated?
could he not have aestivated?
could we not have aestivated?
could you not have aestivated?
could they not have aestivated? 	could I not have been aestivating?
could you not have been aestivating?
could he not have been aestivating?
could we not have been aestivating?
could you not have been aestivating?
could they not have been aestivating?