could color
Verbo regular: color - colored- colored

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could color
you could color
he could color
we could color
you could color
they could color 	I could be coloring
you could be coloring
he could be coloring
we could be coloring
you could be coloring
they could be coloring	I could have colored
you could have colored
he could have colored
we could have colored
you could have colored
they could have colored	I could have been coloring
you could have been coloring
he could have been coloring
we could have been coloring
you could have been coloring
they could have been coloring	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't color
you couldn't color
he couldn't color
we couldn't color
you couldn't color
they couldn't color 	I couldn't be coloring
you couldn't be coloring
he couldn't be coloring
we couldn't be coloring
you couldn't be coloring
they couldn't be coloring	I couldn't have colored
you couldn't have colored
he couldn't have colored
we couldn't have colored
you couldn't have colored
they couldn't have colored	I couldn't have been coloring
you couldn't have been coloring
he couldn't have been coloring
we couldn't have been coloring
you couldn't have been coloring
they couldn't have been coloring	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I color?
could you color?
could he color?
could we color?
could you color?
could they color? 	could I be coloring?
could you be coloring?
could he be coloring?
could we be coloring?
could you be coloring?
could they be coloring? 	could I have colored?
could you have colored?
could he have colored?
could we have colored?
could you have colored?
could they have colored? 	could I have been coloring?
could you have been coloring?
could he have been coloring?
could we have been coloring?
could you have been coloring?
could they have been coloring? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I color?
couldn't you color?
couldn't he color?
couldn't we color?
couldn't you color?
couldn't they color? 	couldn't I be coloring?
couldn't you be coloring?
couldn't he be coloring?
couldn't we be coloring?
couldn't you be coloring?
couldn't they be coloring? 	couldn't I have colored?
couldn't you have colored?
couldn't he have colored?
couldn't we have colored?
couldn't you have colored?
couldn't they have colored? 	couldn't I have been coloring?
couldn't you have been coloring?
couldn't he have been coloring?
couldn't we have been coloring?
couldn't you have been coloring?
couldn't they have been coloring?