could ensure
Verbo regular: ensure - ensured- ensured

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could ensure
you could ensure
he could ensure
we could ensure
you could ensure
they could ensure 	I could be ensuring
you could be ensuring
he could be ensuring
we could be ensuring
you could be ensuring
they could be ensuring	I could have ensured
you could have ensured
he could have ensured
we could have ensured
you could have ensured
they could have ensured	I could have been ensuring
you could have been ensuring
he could have been ensuring
we could have been ensuring
you could have been ensuring
they could have been ensuring	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't ensure
you couldn't ensure
he couldn't ensure
we couldn't ensure
you couldn't ensure
they couldn't ensure 	I couldn't be ensuring
you couldn't be ensuring
he couldn't be ensuring
we couldn't be ensuring
you couldn't be ensuring
they couldn't be ensuring	I couldn't have ensured
you couldn't have ensured
he couldn't have ensured
we couldn't have ensured
you couldn't have ensured
they couldn't have ensured	I couldn't have been ensuring
you couldn't have been ensuring
he couldn't have been ensuring
we couldn't have been ensuring
you couldn't have been ensuring
they couldn't have been ensuring	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I ensure?
could you ensure?
could he ensure?
could we ensure?
could you ensure?
could they ensure? 	could I be ensuring?
could you be ensuring?
could he be ensuring?
could we be ensuring?
could you be ensuring?
could they be ensuring? 	could I have ensured?
could you have ensured?
could he have ensured?
could we have ensured?
could you have ensured?
could they have ensured? 	could I have been ensuring?
could you have been ensuring?
could he have been ensuring?
could we have been ensuring?
could you have been ensuring?
could they have been ensuring? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I ensure?
couldn't you ensure?
couldn't he ensure?
couldn't we ensure?
couldn't you ensure?
couldn't they ensure? 	couldn't I be ensuring?
couldn't you be ensuring?
couldn't he be ensuring?
couldn't we be ensuring?
couldn't you be ensuring?
couldn't they be ensuring? 	couldn't I have ensured?
couldn't you have ensured?
couldn't he have ensured?
couldn't we have ensured?
couldn't you have ensured?
couldn't they have ensured? 	couldn't I have been ensuring?
couldn't you have been ensuring?
couldn't he have been ensuring?
couldn't we have been ensuring?
couldn't you have been ensuring?
couldn't they have been ensuring?