could weatherproof
Regular verb: weatherproof - weatherproofed- weatherproofed

Affirmation 	
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I could weatherproof
you could weatherproof
he could weatherproof
we could weatherproof
you could weatherproof
they could weatherproof 	I could be weatherproofing
you could be weatherproofing
he could be weatherproofing
we could be weatherproofing
you could be weatherproofing
they could be weatherproofing	I could have weatherproofed
you could have weatherproofed
he could have weatherproofed
we could have weatherproofed
you could have weatherproofed
they could have weatherproofed	I could have been weatherproofing
you could have been weatherproofing
he could have been weatherproofing
we could have been weatherproofing
you could have been weatherproofing
they could have been weatherproofing	

Negation 	
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I couldn't weatherproof
you couldn't weatherproof
he couldn't weatherproof
we couldn't weatherproof
you couldn't weatherproof
they couldn't weatherproof 	I couldn't be weatherproofing
you couldn't be weatherproofing
he couldn't be weatherproofing
we couldn't be weatherproofing
you couldn't be weatherproofing
they couldn't be weatherproofing	I couldn't have weatherproofed
you couldn't have weatherproofed
he couldn't have weatherproofed
we couldn't have weatherproofed
you couldn't have weatherproofed
they couldn't have weatherproofed	I couldn't have been weatherproofing
you couldn't have been weatherproofing
he couldn't have been weatherproofing
we couldn't have been weatherproofing
you couldn't have been weatherproofing
they couldn't have been weatherproofing	

Interrogative form 	
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could I weatherproof?
could you weatherproof?
could he weatherproof?
could we weatherproof?
could you weatherproof?
could they weatherproof? 	could I be weatherproofing?
could you be weatherproofing?
could he be weatherproofing?
could we be weatherproofing?
could you be weatherproofing?
could they be weatherproofing? 	could I have weatherproofed?
could you have weatherproofed?
could he have weatherproofed?
could we have weatherproofed?
could you have weatherproofed?
could they have weatherproofed? 	could I have been weatherproofing?
could you have been weatherproofing?
could he have been weatherproofing?
could we have been weatherproofing?
could you have been weatherproofing?
could they have been weatherproofing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I weatherproof?
couldn't you weatherproof?
couldn't he weatherproof?
couldn't we weatherproof?
couldn't you weatherproof?
couldn't they weatherproof? 	couldn't I be weatherproofing?
couldn't you be weatherproofing?
couldn't he be weatherproofing?
couldn't we be weatherproofing?
couldn't you be weatherproofing?
couldn't they be weatherproofing? 	couldn't I have weatherproofed?
couldn't you have weatherproofed?
couldn't he have weatherproofed?
couldn't we have weatherproofed?
couldn't you have weatherproofed?
couldn't they have weatherproofed? 	couldn't I have been weatherproofing?
couldn't you have been weatherproofing?
couldn't he have been weatherproofing?
couldn't we have been weatherproofing?
couldn't you have been weatherproofing?
couldn't they have been weatherproofing?