could undertain
Verbo regolare: undertain - undertained- undertained

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could undertain
you could undertain
he could undertain
we could undertain
you could undertain
they could undertain 	I could be undertaining
you could be undertaining
he could be undertaining
we could be undertaining
you could be undertaining
they could be undertaining	I could have undertained
you could have undertained
he could have undertained
we could have undertained
you could have undertained
they could have undertained	I could have been undertaining
you could have been undertaining
he could have been undertaining
we could have been undertaining
you could have been undertaining
they could have been undertaining	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't undertain
you couldn't undertain
he couldn't undertain
we couldn't undertain
you couldn't undertain
they couldn't undertain 	I couldn't be undertaining
you couldn't be undertaining
he couldn't be undertaining
we couldn't be undertaining
you couldn't be undertaining
they couldn't be undertaining	I couldn't have undertained
you couldn't have undertained
he couldn't have undertained
we couldn't have undertained
you couldn't have undertained
they couldn't have undertained	I couldn't have been undertaining
you couldn't have been undertaining
he couldn't have been undertaining
we couldn't have been undertaining
you couldn't have been undertaining
they couldn't have been undertaining	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I undertain?
could you undertain?
could he undertain?
could we undertain?
could you undertain?
could they undertain? 	could I be undertaining?
could you be undertaining?
could he be undertaining?
could we be undertaining?
could you be undertaining?
could they be undertaining? 	could I have undertained?
could you have undertained?
could he have undertained?
could we have undertained?
could you have undertained?
could they have undertained? 	could I have been undertaining?
could you have been undertaining?
could he have been undertaining?
could we have been undertaining?
could you have been undertaining?
could they have been undertaining? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I undertain?
couldn't you undertain?
couldn't he undertain?
couldn't we undertain?
couldn't you undertain?
couldn't they undertain? 	couldn't I be undertaining?
couldn't you be undertaining?
couldn't he be undertaining?
couldn't we be undertaining?
couldn't you be undertaining?
couldn't they be undertaining? 	couldn't I have undertained?
couldn't you have undertained?
couldn't he have undertained?
couldn't we have undertained?
couldn't you have undertained?
couldn't they have undertained? 	couldn't I have been undertaining?
couldn't you have been undertaining?
couldn't he have been undertaining?
couldn't we have been undertaining?
couldn't you have been undertaining?
couldn't they have been undertaining?