could ingrain
Verbo regular: ingrain - ingrained- ingrained

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could ingrain
you could ingrain
he could ingrain
we could ingrain
you could ingrain
they could ingrain 	I could be ingraining
you could be ingraining
he could be ingraining
we could be ingraining
you could be ingraining
they could be ingraining	I could have ingrained
you could have ingrained
he could have ingrained
we could have ingrained
you could have ingrained
they could have ingrained	I could have been ingraining
you could have been ingraining
he could have been ingraining
we could have been ingraining
you could have been ingraining
they could have been ingraining	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not ingrain
you could not ingrain
he could not ingrain
we could not ingrain
you could not ingrain
they could not ingrain 	I could not be ingraining
you could not be ingraining
he could not be ingraining
we could not be ingraining
you could not be ingraining
they could not be ingraining	I could not have ingrained
you could not have ingrained
he could not have ingrained
we could not have ingrained
you could not have ingrained
they could not have ingrained	I could not have been ingraining
you could not have been ingraining
he could not have been ingraining
we could not have been ingraining
you could not have been ingraining
they could not have been ingraining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I ingrain?
could you ingrain?
could he ingrain?
could we ingrain?
could you ingrain?
could they ingrain? 	could I be ingraining?
could you be ingraining?
could he be ingraining?
could we be ingraining?
could you be ingraining?
could they be ingraining? 	could I have ingrained?
could you have ingrained?
could he have ingrained?
could we have ingrained?
could you have ingrained?
could they have ingrained? 	could I have been ingraining?
could you have been ingraining?
could he have been ingraining?
could we have been ingraining?
could you have been ingraining?
could they have been ingraining? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not ingrain?
could you not ingrain?
could he not ingrain?
could we not ingrain?
could you not ingrain?
could they not ingrain? 	could I not be ingraining?
could you not be ingraining?
could he not be ingraining?
could we not be ingraining?
could you not be ingraining?
could they not be ingraining? 	could I not have ingrained?
could you not have ingrained?
could he not have ingrained?
could we not have ingrained?
could you not have ingrained?
could they not have ingrained? 	could I not have been ingraining?
could you not have been ingraining?
could he not have been ingraining?
could we not have been ingraining?
could you not have been ingraining?
could they not have been ingraining?