could discontinue
Verbo regular: discontinue - discontinued- discontinued

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could discontinue
you could discontinue
he could discontinue
we could discontinue
you could discontinue
they could discontinue 	I could be discontinuing
you could be discontinuing
he could be discontinuing
we could be discontinuing
you could be discontinuing
they could be discontinuing	I could have discontinued
you could have discontinued
he could have discontinued
we could have discontinued
you could have discontinued
they could have discontinued	I could have been discontinuing
you could have been discontinuing
he could have been discontinuing
we could have been discontinuing
you could have been discontinuing
they could have been discontinuing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not discontinue
you could not discontinue
he could not discontinue
we could not discontinue
you could not discontinue
they could not discontinue 	I could not be discontinuing
you could not be discontinuing
he could not be discontinuing
we could not be discontinuing
you could not be discontinuing
they could not be discontinuing	I could not have discontinued
you could not have discontinued
he could not have discontinued
we could not have discontinued
you could not have discontinued
they could not have discontinued	I could not have been discontinuing
you could not have been discontinuing
he could not have been discontinuing
we could not have been discontinuing
you could not have been discontinuing
they could not have been discontinuing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I discontinue?
could you discontinue?
could he discontinue?
could we discontinue?
could you discontinue?
could they discontinue? 	could I be discontinuing?
could you be discontinuing?
could he be discontinuing?
could we be discontinuing?
could you be discontinuing?
could they be discontinuing? 	could I have discontinued?
could you have discontinued?
could he have discontinued?
could we have discontinued?
could you have discontinued?
could they have discontinued? 	could I have been discontinuing?
could you have been discontinuing?
could he have been discontinuing?
could we have been discontinuing?
could you have been discontinuing?
could they have been discontinuing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not discontinue?
could you not discontinue?
could he not discontinue?
could we not discontinue?
could you not discontinue?
could they not discontinue? 	could I not be discontinuing?
could you not be discontinuing?
could he not be discontinuing?
could we not be discontinuing?
could you not be discontinuing?
could they not be discontinuing? 	could I not have discontinued?
could you not have discontinued?
could he not have discontinued?
could we not have discontinued?
could you not have discontinued?
could they not have discontinued? 	could I not have been discontinuing?
could you not have been discontinuing?
could he not have been discontinuing?
could we not have been discontinuing?
could you not have been discontinuing?
could they not have been discontinuing?