must grasp
Regular verb: grasp - grasped- grasped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must grasp
you must grasp
she must grasp
we must grasp
you must grasp
they must grasp 	I must be grasping
you must be grasping
she must be grasping
we must be grasping
you must be grasping
they must be grasping	I must have grasped
you must have grasped
she 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
she must have been grasping
we must have been grasping
you must have been grasping
they must have been grasping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not grasp
you must not grasp
she 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
she 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
she 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
she must not have been grasping
we must not have been grasping
you must not have been grasping
they must not have been grasping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I grasp?
must you grasp?
must she grasp?
must we grasp?
must you grasp?
must they grasp? 	must I be grasping?
must you be grasping?
must she be grasping?
must we be grasping?
must you be grasping?
must they be grasping? 	must I have grasped?
must you have grasped?
must she 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 she have been grasping?
must we have been grasping?
must you have been grasping?
must they have been grasping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not grasp?
must you not grasp?
must she 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 she 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 she 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 she not have been grasping?
must we not have been grasping?
must you not have been grasping?
must they not have been grasping?