could spec
Verbo regular: spec - speced- speced

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could spec
you could spec
he could spec
we could spec
you could spec
they could spec 	I could be specing
you could be specing
he could be specing
we could be specing
you could be specing
they could be specing	I could have speced
you could have speced
he could have speced
we could have speced
you could have speced
they could have speced	I could have been specing
you could have been specing
he could have been specing
we could have been specing
you could have been specing
they could have been specing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't spec
you couldn't spec
he couldn't spec
we couldn't spec
you couldn't spec
they couldn't spec 	I couldn't be specing
you couldn't be specing
he couldn't be specing
we couldn't be specing
you couldn't be specing
they couldn't be specing	I couldn't have speced
you couldn't have speced
he couldn't have speced
we couldn't have speced
you couldn't have speced
they couldn't have speced	I couldn't have been specing
you couldn't have been specing
he couldn't have been specing
we couldn't have been specing
you couldn't have been specing
they couldn't have been specing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I spec?
could you spec?
could he spec?
could we spec?
could you spec?
could they spec? 	could I be specing?
could you be specing?
could he be specing?
could we be specing?
could you be specing?
could they be specing? 	could I have speced?
could you have speced?
could he have speced?
could we have speced?
could you have speced?
could they have speced? 	could I have been specing?
could you have been specing?
could he have been specing?
could we have been specing?
could you have been specing?
could they have been specing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I spec?
couldn't you spec?
couldn't he spec?
couldn't we spec?
couldn't you spec?
couldn't they spec? 	couldn't I be specing?
couldn't you be specing?
couldn't he be specing?
couldn't we be specing?
couldn't you be specing?
couldn't they be specing? 	couldn't I have speced?
couldn't you have speced?
couldn't he have speced?
couldn't we have speced?
couldn't you have speced?
couldn't they have speced? 	couldn't I have been specing?
couldn't you have been specing?
couldn't he have been specing?
couldn't we have been specing?
couldn't you have been specing?
couldn't they have been specing?