could recur
Verbo regular: recur - recurred- recurred

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could recur
you could recur
he could recur
we could recur
you could recur
they could recur 	I could be recurring
you could be recurring
he could be recurring
we could be recurring
you could be recurring
they could be recurring	I could have recurred
you could have recurred
he could have recurred
we could have recurred
you could have recurred
they could have recurred	I could have been recurring
you could have been recurring
he could have been recurring
we could have been recurring
you could have been recurring
they could have been recurring	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't recur
you couldn't recur
he couldn't recur
we couldn't recur
you couldn't recur
they couldn't recur 	I couldn't be recurring
you couldn't be recurring
he couldn't be recurring
we couldn't be recurring
you couldn't be recurring
they couldn't be recurring	I couldn't have recurred
you couldn't have recurred
he couldn't have recurred
we couldn't have recurred
you couldn't have recurred
they couldn't have recurred	I couldn't have been recurring
you couldn't have been recurring
he couldn't have been recurring
we couldn't have been recurring
you couldn't have been recurring
they couldn't have been recurring	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I recur?
could you recur?
could he recur?
could we recur?
could you recur?
could they recur? 	could I be recurring?
could you be recurring?
could he be recurring?
could we be recurring?
could you be recurring?
could they be recurring? 	could I have recurred?
could you have recurred?
could he have recurred?
could we have recurred?
could you have recurred?
could they have recurred? 	could I have been recurring?
could you have been recurring?
could he have been recurring?
could we have been recurring?
could you have been recurring?
could they have been recurring? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I recur?
couldn't you recur?
couldn't he recur?
couldn't we recur?
couldn't you recur?
couldn't they recur? 	couldn't I be recurring?
couldn't you be recurring?
couldn't he be recurring?
couldn't we be recurring?
couldn't you be recurring?
couldn't they be recurring? 	couldn't I have recurred?
couldn't you have recurred?
couldn't he have recurred?
couldn't we have recurred?
couldn't you have recurred?
couldn't they have recurred? 	couldn't I have been recurring?
couldn't you have been recurring?
couldn't he have been recurring?
couldn't we have been recurring?
couldn't you have been recurring?
couldn't they have been recurring?