could euthanize
Regular verb: euthanize - euthanized- euthanized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could euthanize
you could euthanize
she could euthanize
we could euthanize
you could euthanize
they could euthanize 	I could be euthanizing
you could be euthanizing
she could be euthanizing
we could be euthanizing
you could be euthanizing
they could be euthanizing	I could have euthanized
you could have euthanized
she could have euthanized
we could have euthanized
you could have euthanized
they could have euthanized	I could have been euthanizing
you could have been euthanizing
she could have been euthanizing
we could have been euthanizing
you could have been euthanizing
they could have been euthanizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not euthanize
you could not euthanize
she could not euthanize
we could not euthanize
you could not euthanize
they could not euthanize 	I could not be euthanizing
you could not be euthanizing
she could not be euthanizing
we could not be euthanizing
you could not be euthanizing
they could not be euthanizing	I could not have euthanized
you could not have euthanized
she could not have euthanized
we could not have euthanized
you could not have euthanized
they could not have euthanized	I could not have been euthanizing
you could not have been euthanizing
she could not have been euthanizing
we could not have been euthanizing
you could not have been euthanizing
they could not have been euthanizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I euthanize?
could you euthanize?
could she euthanize?
could we euthanize?
could you euthanize?
could they euthanize? 	could I be euthanizing?
could you be euthanizing?
could she be euthanizing?
could we be euthanizing?
could you be euthanizing?
could they be euthanizing? 	could I have euthanized?
could you have euthanized?
could she have euthanized?
could we have euthanized?
could you have euthanized?
could they have euthanized? 	could I have been euthanizing?
could you have been euthanizing?
could she have been euthanizing?
could we have been euthanizing?
could you have been euthanizing?
could they have been euthanizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not euthanize?
could you not euthanize?
could she not euthanize?
could we not euthanize?
could you not euthanize?
could they not euthanize? 	could I not be euthanizing?
could you not be euthanizing?
could she not be euthanizing?
could we not be euthanizing?
could you not be euthanizing?
could they not be euthanizing? 	could I not have euthanized?
could you not have euthanized?
could she not have euthanized?
could we not have euthanized?
could you not have euthanized?
could they not have euthanized? 	could I not have been euthanizing?
could you not have been euthanizing?
could she not have been euthanizing?
could we not have been euthanizing?
could you not have been euthanizing?
could they not have been euthanizing?