could underwork
Verbo regular: underwork - underworked- underworked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could underwork
you could underwork
he could underwork
we could underwork
you could underwork
they could underwork 	I could be underworking
you could be underworking
he could be underworking
we could be underworking
you could be underworking
they could be underworking	I could have underworked
you could have underworked
he could have underworked
we could have underworked
you could have underworked
they could have underworked	I could have been underworking
you could have been underworking
he could have been underworking
we could have been underworking
you could have been underworking
they could have been underworking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't underwork
you couldn't underwork
he couldn't underwork
we couldn't underwork
you couldn't underwork
they couldn't underwork 	I couldn't be underworking
you couldn't be underworking
he couldn't be underworking
we couldn't be underworking
you couldn't be underworking
they couldn't be underworking	I couldn't have underworked
you couldn't have underworked
he couldn't have underworked
we couldn't have underworked
you couldn't have underworked
they couldn't have underworked	I couldn't have been underworking
you couldn't have been underworking
he couldn't have been underworking
we couldn't have been underworking
you couldn't have been underworking
they couldn't have been underworking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I underwork?
could you underwork?
could he underwork?
could we underwork?
could you underwork?
could they underwork? 	could I be underworking?
could you be underworking?
could he be underworking?
could we be underworking?
could you be underworking?
could they be underworking? 	could I have underworked?
could you have underworked?
could he have underworked?
could we have underworked?
could you have underworked?
could they have underworked? 	could I have been underworking?
could you have been underworking?
could he have been underworking?
could we have been underworking?
could you have been underworking?
could they have been underworking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I underwork?
couldn't you underwork?
couldn't he underwork?
couldn't we underwork?
couldn't you underwork?
couldn't they underwork? 	couldn't I be underworking?
couldn't you be underworking?
couldn't he be underworking?
couldn't we be underworking?
couldn't you be underworking?
couldn't they be underworking? 	couldn't I have underworked?
couldn't you have underworked?
couldn't he have underworked?
couldn't we have underworked?
couldn't you have underworked?
couldn't they have underworked? 	couldn't I have been underworking?
couldn't you have been underworking?
couldn't he have been underworking?
couldn't we have been underworking?
couldn't you have been underworking?
couldn't they have been underworking?