can preobtain
Regular verb: preobtain - preobtained- preobtained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can preobtain
you can preobtain
he can preobtain
we can preobtain
you can preobtain
they can preobtain 	I can be preobtaining
you can be preobtaining
he can be preobtaining
we can be preobtaining
you can be preobtaining
they can be preobtaining	I can have preobtained
you can have preobtained
he can have preobtained
we can have preobtained
you can have preobtained
they can have preobtained	I can have been preobtaining
you can have been preobtaining
he can have been preobtaining
we can have been preobtaining
you can have been preobtaining
they can have been preobtaining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't preobtain
you can't preobtain
he can't preobtain
we can't preobtain
you can't preobtain
they can't preobtain 	I can't be preobtaining
you can't be preobtaining
he can't be preobtaining
we can't be preobtaining
you can't be preobtaining
they can't be preobtaining	I can't have preobtained
you can't have preobtained
he can't have preobtained
we can't have preobtained
you can't have preobtained
they can't have preobtained	I can't have been preobtaining
you can't have been preobtaining
he can't have been preobtaining
we can't have been preobtaining
you can't have been preobtaining
they can't have been preobtaining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I preobtain?
can you preobtain?
can he preobtain?
can we preobtain?
can you preobtain?
can they preobtain? 	can I be preobtaining?
can you be preobtaining?
can he be preobtaining?
can we be preobtaining?
can you be preobtaining?
can they be preobtaining? 	can I have preobtained?
can you have preobtained?
can he have preobtained?
can we have preobtained?
can you have preobtained?
can they have preobtained? 	can I have been preobtaining?
can you have been preobtaining?
can he have been preobtaining?
can we have been preobtaining?
can you have been preobtaining?
can they have been preobtaining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I preobtain?
can't you preobtain?
can't he preobtain?
can't we preobtain?
can't you preobtain?
can't they preobtain? 	can't I be preobtaining?
can't you be preobtaining?
can't he be preobtaining?
can't we be preobtaining?
can't you be preobtaining?
can't they be preobtaining? 	can't I have preobtained?
can't you have preobtained?
can't he have preobtained?
can't we have preobtained?
can't you have preobtained?
can't they have preobtained? 	can't I have been preobtaining?
can't you have been preobtaining?
can't he have been preobtaining?
can't we have been preobtaining?
can't you have been preobtaining?
can't they have been preobtaining?