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 couldn't base
you couldn't base
he couldn't base
we couldn't base
you couldn't base
they couldn't base 	I couldn't be basing
you couldn't be basing
he couldn't be basing
we couldn't be basing
you couldn't be basing
they couldn't be basing	I couldn't have based
you couldn't have based
he couldn't have based
we couldn't have based
you couldn't have based
they couldn't have based	I couldn't have been basing
you couldn't have been basing
he couldn't have been basing
we couldn't have been basing
you couldn't have been basing
they couldn't 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 	
couldn't I base?
couldn't you base?
couldn't he base?
couldn't we base?
couldn't you base?
couldn't they base? 	couldn't I be basing?
couldn't you be basing?
couldn't he be basing?
couldn't we be basing?
couldn't you be basing?
couldn't they be basing? 	couldn't I have based?
couldn't you have based?
couldn't he have based?
couldn't we have based?
couldn't you have based?
couldn't they have based? 	couldn't I have been basing?
couldn't you have been basing?
couldn't he have been basing?
couldn't we have been basing?
couldn't you have been basing?
couldn't they have been basing?