could bug
Verbo regular: bug - bugged- bugged

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could bug
you could bug
she could bug
we could bug
you could bug
they could bug 	I could be bugging
you could be bugging
she could be bugging
we could be bugging
you could be bugging
they could be bugging	I could have bugged
you could have bugged
she could have bugged
we could have bugged
you could have bugged
they could have bugged	I could have been bugging
you could have been bugging
she could have been bugging
we could have been bugging
you could have been bugging
they could have been bugging	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not bug
you could not bug
she could not bug
we could not bug
you could not bug
they could not bug 	I could not be bugging
you could not be bugging
she could not be bugging
we could not be bugging
you could not be bugging
they could not be bugging	I could not have bugged
you could not have bugged
she could not have bugged
we could not have bugged
you could not have bugged
they could not have bugged	I could not have been bugging
you could not have been bugging
she could not have been bugging
we could not have been bugging
you could not have been bugging
they could not have been bugging	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I bug?
could you bug?
could she bug?
could we bug?
could you bug?
could they bug? 	could I be bugging?
could you be bugging?
could she be bugging?
could we be bugging?
could you be bugging?
could they be bugging? 	could I have bugged?
could you have bugged?
could she have bugged?
could we have bugged?
could you have bugged?
could they have bugged? 	could I have been bugging?
could you have been bugging?
could she have been bugging?
could we have been bugging?
could you have been bugging?
could they have been bugging? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not bug?
could you not bug?
could she not bug?
could we not bug?
could you not bug?
could they not bug? 	could I not be bugging?
could you not be bugging?
could she not be bugging?
could we not be bugging?
could you not be bugging?
could they not be bugging? 	could I not have bugged?
could you not have bugged?
could she not have bugged?
could we not have bugged?
could you not have bugged?
could they not have bugged? 	could I not have been bugging?
could you not have been bugging?
could she not have been bugging?
could we not have been bugging?
could you not have been bugging?
could they not have been bugging?