could waterproof
Verbo regular: waterproof - waterproofed- waterproofed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could waterproof
you could waterproof
he could waterproof
we could waterproof
you could waterproof
they could waterproof 	I could be waterproofing
you could be waterproofing
he could be waterproofing
we could be waterproofing
you could be waterproofing
they could be waterproofing	I could have waterproofed
you could have waterproofed
he could have waterproofed
we could have waterproofed
you could have waterproofed
they could have waterproofed	I could have been waterproofing
you could have been waterproofing
he could have been waterproofing
we could have been waterproofing
you could have been waterproofing
they could have been waterproofing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't waterproof
you couldn't waterproof
he couldn't waterproof
we couldn't waterproof
you couldn't waterproof
they couldn't waterproof 	I couldn't be waterproofing
you couldn't be waterproofing
he couldn't be waterproofing
we couldn't be waterproofing
you couldn't be waterproofing
they couldn't be waterproofing	I couldn't have waterproofed
you couldn't have waterproofed
he couldn't have waterproofed
we couldn't have waterproofed
you couldn't have waterproofed
they couldn't have waterproofed	I couldn't have been waterproofing
you couldn't have been waterproofing
he couldn't have been waterproofing
we couldn't have been waterproofing
you couldn't have been waterproofing
they couldn't have been waterproofing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I waterproof?
could you waterproof?
could he waterproof?
could we waterproof?
could you waterproof?
could they waterproof? 	could I be waterproofing?
could you be waterproofing?
could he be waterproofing?
could we be waterproofing?
could you be waterproofing?
could they be waterproofing? 	could I have waterproofed?
could you have waterproofed?
could he have waterproofed?
could we have waterproofed?
could you have waterproofed?
could they have waterproofed? 	could I have been waterproofing?
could you have been waterproofing?
could he have been waterproofing?
could we have been waterproofing?
could you have been waterproofing?
could they have been waterproofing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I waterproof?
couldn't you waterproof?
couldn't he waterproof?
couldn't we waterproof?
couldn't you waterproof?
couldn't they waterproof? 	couldn't I be waterproofing?
couldn't you be waterproofing?
couldn't he be waterproofing?
couldn't we be waterproofing?
couldn't you be waterproofing?
couldn't they be waterproofing? 	couldn't I have waterproofed?
couldn't you have waterproofed?
couldn't he have waterproofed?
couldn't we have waterproofed?
couldn't you have waterproofed?
couldn't they have waterproofed? 	couldn't I have been waterproofing?
couldn't you have been waterproofing?
couldn't he have been waterproofing?
couldn't we have been waterproofing?
couldn't you have been waterproofing?
couldn't they have been waterproofing?