can perdure
Regular verb: perdure - perdured- perdured

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can perdure
you can perdure
he can perdure
we can perdure
you can perdure
they can perdure 	I can be perduring
you can be perduring
he can be perduring
we can be perduring
you can be perduring
they can be perduring	I can have perdured
you can have perdured
he can have perdured
we can have perdured
you can have perdured
they can have perdured	I can have been perduring
you can have been perduring
he can have been perduring
we can have been perduring
you can have been perduring
they can have been perduring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't perdure
you can't perdure
he can't perdure
we can't perdure
you can't perdure
they can't perdure 	I can't be perduring
you can't be perduring
he can't be perduring
we can't be perduring
you can't be perduring
they can't be perduring	I can't have perdured
you can't have perdured
he can't have perdured
we can't have perdured
you can't have perdured
they can't have perdured	I can't have been perduring
you can't have been perduring
he can't have been perduring
we can't have been perduring
you can't have been perduring
they can't have been perduring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I perdure?
can you perdure?
can he perdure?
can we perdure?
can you perdure?
can they perdure? 	can I be perduring?
can you be perduring?
can he be perduring?
can we be perduring?
can you be perduring?
can they be perduring? 	can I have perdured?
can you have perdured?
can he have perdured?
can we have perdured?
can you have perdured?
can they have perdured? 	can I have been perduring?
can you have been perduring?
can he have been perduring?
can we have been perduring?
can you have been perduring?
can they have been perduring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I perdure?
can't you perdure?
can't he perdure?
can't we perdure?
can't you perdure?
can't they perdure? 	can't I be perduring?
can't you be perduring?
can't he be perduring?
can't we be perduring?
can't you be perduring?
can't they be perduring? 	can't I have perdured?
can't you have perdured?
can't he have perdured?
can't we have perdured?
can't you have perdured?
can't they have perdured? 	can't I have been perduring?
can't you have been perduring?
can't he have been perduring?
can't we have been perduring?
can't you have been perduring?
can't they have been perduring?