could base
Verbo regolare: base - based- based

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could base
you could base
he could base
we could base
you could base
they could base 	I could be basing
you could be basing
he could be basing
we could be basing
you could be basing
they could be basing	I could have based
you could have based
he could have based
we could have based
you could have based
they could have based	I could have been basing
you could have been basing
he could have been basing
we could have been basing
you could have been basing
they could have been basing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not base
you could not base
he could not base
we could not base
you could not base
they could not base 	I could not be basing
you could not be basing
he could not be basing
we could not be basing
you could not be basing
they could not be basing	I could not have based
you could not have based
he could not have based
we could not have based
you could not have based
they could not have based	I could not have been basing
you could not have been basing
he could not have been basing
we could not have been basing
you could not have been basing
they could not have been basing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I base?
could you base?
could he base?
could we base?
could you base?
could they base? 	could I be basing?
could you be basing?
could he be basing?
could we be basing?
could you be basing?
could they be basing? 	could I have based?
could you have based?
could he have based?
could we have based?
could you have based?
could they have based? 	could I have been basing?
could you have been basing?
could he have been basing?
could we have been basing?
could you have been basing?
could they have been basing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not base?
could you not base?
could he not base?
could we not base?
could you not base?
could they not base? 	could I not be basing?
could you not be basing?
could he not be basing?
could we not be basing?
could you not be basing?
could they not be basing? 	could I not have based?
could you not have based?
could he not have based?
could we not have based?
could you not have based?
could they not have based? 	could I not have been basing?
could you not have been basing?
could he not have been basing?
could we not have been basing?
could you not have been basing?
could they not have been basing?