must ingrain
Verbo regular: ingrain - ingrained- ingrained

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must ingrain
you must ingrain
he must ingrain
we must ingrain
you must ingrain
they must ingrain 	I must be ingraining
you must be ingraining
he must be ingraining
we must be ingraining
you must be ingraining
they must be ingraining	I must have ingrained
you must have ingrained
he must have ingrained
we must have ingrained
you must have ingrained
they must have ingrained	I must have been ingraining
you must have been ingraining
he must have been ingraining
we must have been ingraining
you must have been ingraining
they must have been ingraining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't ingrain
you mustn't ingrain
he mustn't ingrain
we mustn't ingrain
you mustn't ingrain
they mustn't ingrain 	I mustn't be ingraining
you mustn't be ingraining
he mustn't be ingraining
we mustn't be ingraining
you mustn't be ingraining
they mustn't be ingraining	I mustn't have ingrained
you mustn't have ingrained
he mustn't have ingrained
we mustn't have ingrained
you mustn't have ingrained
they mustn't have ingrained	I mustn't have been ingraining
you mustn't have been ingraining
he mustn't have been ingraining
we mustn't have been ingraining
you mustn't have been ingraining
they mustn't have been ingraining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I ingrain?
must you ingrain?
must he ingrain?
must we ingrain?
must you ingrain?
must they ingrain? 	must I be ingraining?
must you be ingraining?
must he be ingraining?
must we be ingraining?
must you be ingraining?
must they be ingraining? 	must I have ingrained?
must you have ingrained?
must he have ingrained?
must we have ingrained?
must you have ingrained?
must they have ingrained? 	must I have been ingraining?
must you have been ingraining?
must he have been ingraining?
must we have been ingraining?
must you have been ingraining?
must they have been ingraining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I ingrain?
mustn't you ingrain?
mustn't he ingrain?
mustn't we ingrain?
mustn't you ingrain?
mustn't they ingrain? 	mustn't I be ingraining?
mustn't you be ingraining?
mustn't he be ingraining?
mustn't we be ingraining?
mustn't you be ingraining?
mustn't they be ingraining? 	mustn't I have ingrained?
mustn't you have ingrained?
mustn't he have ingrained?
mustn't we have ingrained?
mustn't you have ingrained?
mustn't they have ingrained? 	mustn't I have been ingraining?
mustn't you have been ingraining?
mustn't he have been ingraining?
mustn't we have been ingraining?
mustn't you have been ingraining?
mustn't they have been ingraining?