could grasp
Regular verb: grasp - grasped- grasped

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't grasp
you couldn't grasp
he couldn't grasp
we couldn't grasp
you couldn't grasp
they couldn't grasp 	I couldn't be grasping
you couldn't be grasping
he couldn't be grasping
we couldn't be grasping
you couldn't be grasping
they couldn't be grasping	I couldn't have grasped
you couldn't have grasped
he couldn't have grasped
we couldn't have grasped
you couldn't have grasped
they couldn't have grasped	I couldn't have been grasping
you couldn't have been grasping
he couldn't have been grasping
we couldn't have been grasping
you couldn't have been grasping
they couldn't have been grasping	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I grasp?
couldn't you grasp?
couldn't he grasp?
couldn't we grasp?
couldn't you grasp?
couldn't they grasp? 	couldn't I be grasping?
couldn't you be grasping?
couldn't he be grasping?
couldn't we be grasping?
couldn't you be grasping?
couldn't they be grasping? 	couldn't I have grasped?
couldn't you have grasped?
couldn't he have grasped?
couldn't we have grasped?
couldn't you have grasped?
couldn't they have grasped? 	couldn't I have been grasping?
couldn't you have been grasping?
couldn't he have been grasping?
couldn't we have been grasping?
couldn't you have been grasping?
couldn't they have been grasping?