can usurp
Regular verb: usurp - usurped- usurped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can usurp
you can usurp
he can usurp
we can usurp
you can usurp
they can usurp 	I can be usurping
you can be usurping
he can be usurping
we can be usurping
you can be usurping
they can be usurping	I can have usurped
you can have usurped
he can have usurped
we can have usurped
you can have usurped
they can have usurped	I can have been usurping
you can have been usurping
he can have been usurping
we can have been usurping
you can have been usurping
they can have been usurping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't usurp
you can't usurp
he can't usurp
we can't usurp
you can't usurp
they can't usurp 	I can't be usurping
you can't be usurping
he can't be usurping
we can't be usurping
you can't be usurping
they can't be usurping	I can't have usurped
you can't have usurped
he can't have usurped
we can't have usurped
you can't have usurped
they can't have usurped	I can't have been usurping
you can't have been usurping
he can't have been usurping
we can't have been usurping
you can't have been usurping
they can't have been usurping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I usurp?
can you usurp?
can he usurp?
can we usurp?
can you usurp?
can they usurp? 	can I be usurping?
can you be usurping?
can he be usurping?
can we be usurping?
can you be usurping?
can they be usurping? 	can I have usurped?
can you have usurped?
can he have usurped?
can we have usurped?
can you have usurped?
can they have usurped? 	can I have been usurping?
can you have been usurping?
can he have been usurping?
can we have been usurping?
can you have been usurping?
can they have been usurping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I usurp?
can't you usurp?
can't he usurp?
can't we usurp?
can't you usurp?
can't they usurp? 	can't I be usurping?
can't you be usurping?
can't he be usurping?
can't we be usurping?
can't you be usurping?
can't they be usurping? 	can't I have usurped?
can't you have usurped?
can't he have usurped?
can't we have usurped?
can't you have usurped?
can't they have usurped? 	can't I have been usurping?
can't you have been usurping?
can't he have been usurping?
can't we have been usurping?
can't you have been usurping?
can't they have been usurping?