could euthanize
Verbo regular: euthanize - euthanized- euthanized

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could euthanize
you could euthanize
he could euthanize
we could euthanize
you could euthanize
they could euthanize 	I could be euthanizing
you could be euthanizing
he could be euthanizing
we could be euthanizing
you could be euthanizing
they could be euthanizing	I could have euthanized
you could have euthanized
he 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
he could have been euthanizing
we could have been euthanizing
you could have been euthanizing
they could have been euthanizing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't euthanize
you couldn't euthanize
he couldn't euthanize
we couldn't euthanize
you couldn't euthanize
they couldn't euthanize 	I couldn't be euthanizing
you couldn't be euthanizing
he couldn't be euthanizing
we couldn't be euthanizing
you couldn't be euthanizing
they couldn't be euthanizing	I couldn't have euthanized
you couldn't have euthanized
he couldn't have euthanized
we couldn't have euthanized
you couldn't have euthanized
they couldn't have euthanized	I couldn't have been euthanizing
you couldn't have been euthanizing
he couldn't have been euthanizing
we couldn't have been euthanizing
you couldn't have been euthanizing
they couldn't have been euthanizing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I euthanize?
could you euthanize?
could he euthanize?
could we euthanize?
could you euthanize?
could they euthanize? 	could I be euthanizing?
could you be euthanizing?
could he be euthanizing?
could we be euthanizing?
could you be euthanizing?
could they be euthanizing? 	could I have euthanized?
could you have euthanized?
could he 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 he have been euthanizing?
could we have been euthanizing?
could you have been euthanizing?
could they have been euthanizing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I euthanize?
couldn't you euthanize?
couldn't he euthanize?
couldn't we euthanize?
couldn't you euthanize?
couldn't they euthanize? 	couldn't I be euthanizing?
couldn't you be euthanizing?
couldn't he be euthanizing?
couldn't we be euthanizing?
couldn't you be euthanizing?
couldn't they be euthanizing? 	couldn't I have euthanized?
couldn't you have euthanized?
couldn't he have euthanized?
couldn't we have euthanized?
couldn't you have euthanized?
couldn't they have euthanized? 	couldn't I have been euthanizing?
couldn't you have been euthanizing?
couldn't he have been euthanizing?
couldn't we have been euthanizing?
couldn't you have been euthanizing?
couldn't they have been euthanizing?