must grasp
Verbo regular: grasp - grasped- grasped

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must grasp
you must grasp
he must grasp
we must grasp
you must grasp
they must grasp 	I must be grasping
you must be grasping
he must be grasping
we must be grasping
you must be grasping
they must be grasping	I must have grasped
you must have grasped
he must have grasped
we must have grasped
you must have grasped
they must have grasped	I must have been grasping
you must have been grasping
he must have been grasping
we must have been grasping
you must have been grasping
they must have been grasping	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not grasp
you must not grasp
he must not grasp
we must not grasp
you must not grasp
they must not grasp 	I must not be grasping
you must not be grasping
he must not be grasping
we must not be grasping
you must not be grasping
they must not be grasping	I must not have grasped
you must not have grasped
he must not have grasped
we must not have grasped
you must not have grasped
they must not have grasped	I must not have been grasping
you must not have been grasping
he must not have been grasping
we must not have been grasping
you must not have been grasping
they must not have been grasping	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I grasp?
must you grasp?
must he grasp?
must we grasp?
must you grasp?
must they grasp? 	must I be grasping?
must you be grasping?
must he be grasping?
must we be grasping?
must you be grasping?
must they be grasping? 	must I have grasped?
must you have grasped?
must he have grasped?
must we have grasped?
must you have grasped?
must they have grasped? 	must I have been grasping?
must you have been grasping?
must he have been grasping?
must we have been grasping?
must you have been grasping?
must they have been grasping? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not grasp?
must you not grasp?
must he not grasp?
must we not grasp?
must you not grasp?
must they not grasp? 	must I not be grasping?
must you not be grasping?
must he not be grasping?
must we not be grasping?
must you not be grasping?
must they not be grasping? 	must I not have grasped?
must you not have grasped?
must he not have grasped?
must we not have grasped?
must you not have grasped?
must they not have grasped? 	must I not have been grasping?
must you not have been grasping?
must he not have been grasping?
must we not have been grasping?
must you not have been grasping?
must they not have been grasping?