could weatherize
Regular verb: weatherize - weatherized- weatherized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could weatherize
you could weatherize
he could weatherize
we could weatherize
you could weatherize
they could weatherize 	I could be weatherizing
you could be weatherizing
he could be weatherizing
we could be weatherizing
you could be weatherizing
they could be weatherizing	I could have weatherized
you could have weatherized
he could have weatherized
we could have weatherized
you could have weatherized
they could have weatherized	I could have been weatherizing
you could have been weatherizing
he could have been weatherizing
we could have been weatherizing
you could have been weatherizing
they could have been weatherizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't weatherize
you couldn't weatherize
he couldn't weatherize
we couldn't weatherize
you couldn't weatherize
they couldn't weatherize 	I couldn't be weatherizing
you couldn't be weatherizing
he couldn't be weatherizing
we couldn't be weatherizing
you couldn't be weatherizing
they couldn't be weatherizing	I couldn't have weatherized
you couldn't have weatherized
he couldn't have weatherized
we couldn't have weatherized
you couldn't have weatherized
they couldn't have weatherized	I couldn't have been weatherizing
you couldn't have been weatherizing
he couldn't have been weatherizing
we couldn't have been weatherizing
you couldn't have been weatherizing
they couldn't have been weatherizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I weatherize?
could you weatherize?
could he weatherize?
could we weatherize?
could you weatherize?
could they weatherize? 	could I be weatherizing?
could you be weatherizing?
could he be weatherizing?
could we be weatherizing?
could you be weatherizing?
could they be weatherizing? 	could I have weatherized?
could you have weatherized?
could he have weatherized?
could we have weatherized?
could you have weatherized?
could they have weatherized? 	could I have been weatherizing?
could you have been weatherizing?
could he have been weatherizing?
could we have been weatherizing?
could you have been weatherizing?
could they have been weatherizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I weatherize?
couldn't you weatherize?
couldn't he weatherize?
couldn't we weatherize?
couldn't you weatherize?
couldn't they weatherize? 	couldn't I be weatherizing?
couldn't you be weatherizing?
couldn't he be weatherizing?
couldn't we be weatherizing?
couldn't you be weatherizing?
couldn't they be weatherizing? 	couldn't I have weatherized?
couldn't you have weatherized?
couldn't he have weatherized?
couldn't we have weatherized?
couldn't you have weatherized?
couldn't they have weatherized? 	couldn't I have been weatherizing?
couldn't you have been weatherizing?
couldn't he have been weatherizing?
couldn't we have been weatherizing?
couldn't you have been weatherizing?
couldn't they have been weatherizing?