could suck
Verbo regular: suck - sucked- sucked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could suck
you could suck
he could suck
we could suck
you could suck
they could suck 	I could be sucking
you could be sucking
he could be sucking
we could be sucking
you could be sucking
they could be sucking	I could have sucked
you could have sucked
he could have sucked
we could have sucked
you could have sucked
they could have sucked	I could have been sucking
you could have been sucking
he could have been sucking
we could have been sucking
you could have been sucking
they could have been sucking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not suck
you could not suck
he could not suck
we could not suck
you could not suck
they could not suck 	I could not be sucking
you could not be sucking
he could not be sucking
we could not be sucking
you could not be sucking
they could not be sucking	I could not have sucked
you could not have sucked
he could not have sucked
we could not have sucked
you could not have sucked
they could not have sucked	I could not have been sucking
you could not have been sucking
he could not have been sucking
we could not have been sucking
you could not have been sucking
they could not have been sucking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I suck?
could you suck?
could he suck?
could we suck?
could you suck?
could they suck? 	could I be sucking?
could you be sucking?
could he be sucking?
could we be sucking?
could you be sucking?
could they be sucking? 	could I have sucked?
could you have sucked?
could he have sucked?
could we have sucked?
could you have sucked?
could they have sucked? 	could I have been sucking?
could you have been sucking?
could he have been sucking?
could we have been sucking?
could you have been sucking?
could they have been sucking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not suck?
could you not suck?
could he not suck?
could we not suck?
could you not suck?
could they not suck? 	could I not be sucking?
could you not be sucking?
could he not be sucking?
could we not be sucking?
could you not be sucking?
could they not be sucking? 	could I not have sucked?
could you not have sucked?
could he not have sucked?
could we not have sucked?
could you not have sucked?
could they not have sucked? 	could I not have been sucking?
could you not have been sucking?
could he not have been sucking?
could we not have been sucking?
could you not have been sucking?
could they not have been sucking?