could constringe
Verbo regular: constringe - constringed- constringed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could constringe
you could constringe
he could constringe
we could constringe
you could constringe
they could constringe 	I could be constringing
you could be constringing
he could be constringing
we could be constringing
you could be constringing
they could be constringing	I could have constringed
you could have constringed
he could have constringed
we could have constringed
you could have constringed
they could have constringed	I could have been constringing
you could have been constringing
he could have been constringing
we could have been constringing
you could have been constringing
they could have been constringing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't constringe
you couldn't constringe
he couldn't constringe
we couldn't constringe
you couldn't constringe
they couldn't constringe 	I couldn't be constringing
you couldn't be constringing
he couldn't be constringing
we couldn't be constringing
you couldn't be constringing
they couldn't be constringing	I couldn't have constringed
you couldn't have constringed
he couldn't have constringed
we couldn't have constringed
you couldn't have constringed
they couldn't have constringed	I couldn't have been constringing
you couldn't have been constringing
he couldn't have been constringing
we couldn't have been constringing
you couldn't have been constringing
they couldn't have been constringing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I constringe?
could you constringe?
could he constringe?
could we constringe?
could you constringe?
could they constringe? 	could I be constringing?
could you be constringing?
could he be constringing?
could we be constringing?
could you be constringing?
could they be constringing? 	could I have constringed?
could you have constringed?
could he have constringed?
could we have constringed?
could you have constringed?
could they have constringed? 	could I have been constringing?
could you have been constringing?
could he have been constringing?
could we have been constringing?
could you have been constringing?
could they have been constringing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I constringe?
couldn't you constringe?
couldn't he constringe?
couldn't we constringe?
couldn't you constringe?
couldn't they constringe? 	couldn't I be constringing?
couldn't you be constringing?
couldn't he be constringing?
couldn't we be constringing?
couldn't you be constringing?
couldn't they be constringing? 	couldn't I have constringed?
couldn't you have constringed?
couldn't he have constringed?
couldn't we have constringed?
couldn't you have constringed?
couldn't they have constringed? 	couldn't I have been constringing?
couldn't you have been constringing?
couldn't he have been constringing?
couldn't we have been constringing?
couldn't you have been constringing?
couldn't they have been constringing?