could tauten
Verbo regolare: tauten - tautened- tautened

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could tauten
you could tauten
he could tauten
we could tauten
you could tauten
they could tauten 	I could be tautening
you could be tautening
he could be tautening
we could be tautening
you could be tautening
they could be tautening	I could have tautened
you could have tautened
he could have tautened
we could have tautened
you could have tautened
they could have tautened	I could have been tautening
you could have been tautening
he could have been tautening
we could have been tautening
you could have been tautening
they could have been tautening	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not tauten
you could not tauten
he could not tauten
we could not tauten
you could not tauten
they could not tauten 	I could not be tautening
you could not be tautening
he could not be tautening
we could not be tautening
you could not be tautening
they could not be tautening	I could not have tautened
you could not have tautened
he could not have tautened
we could not have tautened
you could not have tautened
they could not have tautened	I could not have been tautening
you could not have been tautening
he could not have been tautening
we could not have been tautening
you could not have been tautening
they could not have been tautening	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I tauten?
could you tauten?
could he tauten?
could we tauten?
could you tauten?
could they tauten? 	could I be tautening?
could you be tautening?
could he be tautening?
could we be tautening?
could you be tautening?
could they be tautening? 	could I have tautened?
could you have tautened?
could he have tautened?
could we have tautened?
could you have tautened?
could they have tautened? 	could I have been tautening?
could you have been tautening?
could he have been tautening?
could we have been tautening?
could you have been tautening?
could they have been tautening? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not tauten?
could you not tauten?
could he not tauten?
could we not tauten?
could you not tauten?
could they not tauten? 	could I not be tautening?
could you not be tautening?
could he not be tautening?
could we not be tautening?
could you not be tautening?
could they not be tautening? 	could I not have tautened?
could you not have tautened?
could he not have tautened?
could we not have tautened?
could you not have tautened?
could they not have tautened? 	could I not have been tautening?
could you not have been tautening?
could he not have been tautening?
could we not have been tautening?
could you not have been tautening?
could they not have been tautening?