could underprice
Verbo regular: underprice - underpriced- underpriced

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could underprice
you could underprice
he could underprice
we could underprice
you could underprice
they could underprice 	I could be underpricing
you could be underpricing
he could be underpricing
we could be underpricing
you could be underpricing
they could be underpricing	I could have underpriced
you could have underpriced
he could have underpriced
we could have underpriced
you could have underpriced
they could have underpriced	I could have been underpricing
you could have been underpricing
he could have been underpricing
we could have been underpricing
you could have been underpricing
they could have been underpricing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't underprice
you couldn't underprice
he couldn't underprice
we couldn't underprice
you couldn't underprice
they couldn't underprice 	I couldn't be underpricing
you couldn't be underpricing
he couldn't be underpricing
we couldn't be underpricing
you couldn't be underpricing
they couldn't be underpricing	I couldn't have underpriced
you couldn't have underpriced
he couldn't have underpriced
we couldn't have underpriced
you couldn't have underpriced
they couldn't have underpriced	I couldn't have been underpricing
you couldn't have been underpricing
he couldn't have been underpricing
we couldn't have been underpricing
you couldn't have been underpricing
they couldn't have been underpricing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I underprice?
could you underprice?
could he underprice?
could we underprice?
could you underprice?
could they underprice? 	could I be underpricing?
could you be underpricing?
could he be underpricing?
could we be underpricing?
could you be underpricing?
could they be underpricing? 	could I have underpriced?
could you have underpriced?
could he have underpriced?
could we have underpriced?
could you have underpriced?
could they have underpriced? 	could I have been underpricing?
could you have been underpricing?
could he have been underpricing?
could we have been underpricing?
could you have been underpricing?
could they have been underpricing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I underprice?
couldn't you underprice?
couldn't he underprice?
couldn't we underprice?
couldn't you underprice?
couldn't they underprice? 	couldn't I be underpricing?
couldn't you be underpricing?
couldn't he be underpricing?
couldn't we be underpricing?
couldn't you be underpricing?
couldn't they be underpricing? 	couldn't I have underpriced?
couldn't you have underpriced?
couldn't he have underpriced?
couldn't we have underpriced?
couldn't you have underpriced?
couldn't they have underpriced? 	couldn't I have been underpricing?
couldn't you have been underpricing?
couldn't he have been underpricing?
couldn't we have been underpricing?
couldn't you have been underpricing?
couldn't they have been underpricing?