could invest
Verbo regular: invest - invested- invested

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could invest
you could invest
he could invest
we could invest
you could invest
they could invest 	I could be investing
you could be investing
he could be investing
we could be investing
you could be investing
they could be investing	I could have invested
you could have invested
he could have invested
we could have invested
you could have invested
they could have invested	I could have been investing
you could have been investing
he could have been investing
we could have been investing
you could have been investing
they could have been investing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't invest
you couldn't invest
he couldn't invest
we couldn't invest
you couldn't invest
they couldn't invest 	I couldn't be investing
you couldn't be investing
he couldn't be investing
we couldn't be investing
you couldn't be investing
they couldn't be investing	I couldn't have invested
you couldn't have invested
he couldn't have invested
we couldn't have invested
you couldn't have invested
they couldn't have invested	I couldn't have been investing
you couldn't have been investing
he couldn't have been investing
we couldn't have been investing
you couldn't have been investing
they couldn't have been investing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I invest?
could you invest?
could he invest?
could we invest?
could you invest?
could they invest? 	could I be investing?
could you be investing?
could he be investing?
could we be investing?
could you be investing?
could they be investing? 	could I have invested?
could you have invested?
could he have invested?
could we have invested?
could you have invested?
could they have invested? 	could I have been investing?
could you have been investing?
could he have been investing?
could we have been investing?
could you have been investing?
could they have been investing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I invest?
couldn't you invest?
couldn't he invest?
couldn't we invest?
couldn't you invest?
couldn't they invest? 	couldn't I be investing?
couldn't you be investing?
couldn't he be investing?
couldn't we be investing?
couldn't you be investing?
couldn't they be investing? 	couldn't I have invested?
couldn't you have invested?
couldn't he have invested?
couldn't we have invested?
couldn't you have invested?
couldn't they have invested? 	couldn't I have been investing?
couldn't you have been investing?
couldn't he have been investing?
couldn't we have been investing?
couldn't you have been investing?
couldn't they have been investing?