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