could volatilize
Regular verb: volatilize - volatilized- volatilized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could volatilize
you could volatilize
he could volatilize
we could volatilize
you could volatilize
they could volatilize 	I could be volatilizing
you could be volatilizing
he could be volatilizing
we could be volatilizing
you could be volatilizing
they could be volatilizing	I could have volatilized
you could have volatilized
he could have volatilized
we could have volatilized
you could have volatilized
they could have volatilized	I could have been volatilizing
you could have been volatilizing
he could have been volatilizing
we could have been volatilizing
you could have been volatilizing
they could have been volatilizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't volatilize
you couldn't volatilize
he couldn't volatilize
we couldn't volatilize
you couldn't volatilize
they couldn't volatilize 	I couldn't be volatilizing
you couldn't be volatilizing
he couldn't be volatilizing
we couldn't be volatilizing
you couldn't be volatilizing
they couldn't be volatilizing	I couldn't have volatilized
you couldn't have volatilized
he couldn't have volatilized
we couldn't have volatilized
you couldn't have volatilized
they couldn't have volatilized	I couldn't have been volatilizing
you couldn't have been volatilizing
he couldn't have been volatilizing
we couldn't have been volatilizing
you couldn't have been volatilizing
they couldn't have been volatilizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I volatilize?
could you volatilize?
could he volatilize?
could we volatilize?
could you volatilize?
could they volatilize? 	could I be volatilizing?
could you be volatilizing?
could he be volatilizing?
could we be volatilizing?
could you be volatilizing?
could they be volatilizing? 	could I have volatilized?
could you have volatilized?
could he have volatilized?
could we have volatilized?
could you have volatilized?
could they have volatilized? 	could I have been volatilizing?
could you have been volatilizing?
could he have been volatilizing?
could we have been volatilizing?
could you have been volatilizing?
could they have been volatilizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I volatilize?
couldn't you volatilize?
couldn't he volatilize?
couldn't we volatilize?
couldn't you volatilize?
couldn't they volatilize? 	couldn't I be volatilizing?
couldn't you be volatilizing?
couldn't he be volatilizing?
couldn't we be volatilizing?
couldn't you be volatilizing?
couldn't they be volatilizing? 	couldn't I have volatilized?
couldn't you have volatilized?
couldn't he have volatilized?
couldn't we have volatilized?
couldn't you have volatilized?
couldn't they have volatilized? 	couldn't I have been volatilizing?
couldn't you have been volatilizing?
couldn't he have been volatilizing?
couldn't we have been volatilizing?
couldn't you have been volatilizing?
couldn't they have been volatilizing?