can penetrate
Regular verb: penetrate - penetrated- penetrated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can penetrate
you can penetrate
she can penetrate
we can penetrate
you can penetrate
they can penetrate 	I can be penetrating
you can be penetrating
she can be penetrating
we can be penetrating
you can be penetrating
they can be penetrating	I can have penetrated
you can have penetrated
she can have penetrated
we can have penetrated
you can have penetrated
they can have penetrated	I can have been penetrating
you can have been penetrating
she can have been penetrating
we can have been penetrating
you can have been penetrating
they can have been penetrating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't penetrate
you can't penetrate
she can't penetrate
we can't penetrate
you can't penetrate
they can't penetrate 	I can't be penetrating
you can't be penetrating
she can't be penetrating
we can't be penetrating
you can't be penetrating
they can't be penetrating	I can't have penetrated
you can't have penetrated
she can't have penetrated
we can't have penetrated
you can't have penetrated
they can't have penetrated	I can't have been penetrating
you can't have been penetrating
she can't have been penetrating
we can't have been penetrating
you can't have been penetrating
they can't have been penetrating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I penetrate?
can you penetrate?
can she penetrate?
can we penetrate?
can you penetrate?
can they penetrate? 	can I be penetrating?
can you be penetrating?
can she be penetrating?
can we be penetrating?
can you be penetrating?
can they be penetrating? 	can I have penetrated?
can you have penetrated?
can she have penetrated?
can we have penetrated?
can you have penetrated?
can they have penetrated? 	can I have been penetrating?
can you have been penetrating?
can she have been penetrating?
can we have been penetrating?
can you have been penetrating?
can they have been penetrating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I penetrate?
can't you penetrate?
can't she penetrate?
can't we penetrate?
can't you penetrate?
can't they penetrate? 	can't I be penetrating?
can't you be penetrating?
can't she be penetrating?
can't we be penetrating?
can't you be penetrating?
can't they be penetrating? 	can't I have penetrated?
can't you have penetrated?
can't she have penetrated?
can't we have penetrated?
can't you have penetrated?
can't they have penetrated? 	can't I have been penetrating?
can't you have been penetrating?
can't she have been penetrating?
can't we have been penetrating?
can't you have been penetrating?
can't they have been penetrating?