could reobserve
Verbo regular: reobserve - reobserved- reobserved

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could reobserve
you could reobserve
he could reobserve
we could reobserve
you could reobserve
they could reobserve 	I could be reobserving
you could be reobserving
he could be reobserving
we could be reobserving
you could be reobserving
they could be reobserving	I could have reobserved
you could have reobserved
he could have reobserved
we could have reobserved
you could have reobserved
they could have reobserved	I could have been reobserving
you could have been reobserving
he could have been reobserving
we could have been reobserving
you could have been reobserving
they could have been reobserving	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't reobserve
you couldn't reobserve
he couldn't reobserve
we couldn't reobserve
you couldn't reobserve
they couldn't reobserve 	I couldn't be reobserving
you couldn't be reobserving
he couldn't be reobserving
we couldn't be reobserving
you couldn't be reobserving
they couldn't be reobserving	I couldn't have reobserved
you couldn't have reobserved
he couldn't have reobserved
we couldn't have reobserved
you couldn't have reobserved
they couldn't have reobserved	I couldn't have been reobserving
you couldn't have been reobserving
he couldn't have been reobserving
we couldn't have been reobserving
you couldn't have been reobserving
they couldn't have been reobserving	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I reobserve?
could you reobserve?
could he reobserve?
could we reobserve?
could you reobserve?
could they reobserve? 	could I be reobserving?
could you be reobserving?
could he be reobserving?
could we be reobserving?
could you be reobserving?
could they be reobserving? 	could I have reobserved?
could you have reobserved?
could he have reobserved?
could we have reobserved?
could you have reobserved?
could they have reobserved? 	could I have been reobserving?
could you have been reobserving?
could he have been reobserving?
could we have been reobserving?
could you have been reobserving?
could they have been reobserving? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I reobserve?
couldn't you reobserve?
couldn't he reobserve?
couldn't we reobserve?
couldn't you reobserve?
couldn't they reobserve? 	couldn't I be reobserving?
couldn't you be reobserving?
couldn't he be reobserving?
couldn't we be reobserving?
couldn't you be reobserving?
couldn't they be reobserving? 	couldn't I have reobserved?
couldn't you have reobserved?
couldn't he have reobserved?
couldn't we have reobserved?
couldn't you have reobserved?
couldn't they have reobserved? 	couldn't I have been reobserving?
couldn't you have been reobserving?
couldn't he have been reobserving?
couldn't we have been reobserving?
couldn't you have been reobserving?
couldn't they have been reobserving?