I can castrate you can castrate he can castrate we can castrate you can castrate they can castrate
V-ing form
I can be castrating you can be castrating he can be castrating we can be castrating you can be castrating they can be castrating
Perfect
I can have castrated you can have castrated he can have castrated we can have castrated you can have castrated they can have castrated
V-ing perfect
I can have been castrating you can have been castrating he can have been castrating we can have been castrating you can have been castrating they can have been castrating
Negation
Simple form
I cannot castrate you cannot castrate he cannot castrate we cannot castrate you cannot castrate they cannot castrate
V-ing form
I cannot be castrating you cannot be castrating he cannot be castrating we cannot be castrating you cannot be castrating they cannot be castrating
Perfect
I cannot have castrated you cannot have castrated he cannot have castrated we cannot have castrated you cannot have castrated they cannot have castrated
V-ing perfect
I cannot have been castrating you cannot have been castrating he cannot have been castrating we cannot have been castrating you cannot have been castrating they cannot have been castrating
Interrogative form
Simple form
can I castrate? can you castrate? can he castrate? can we castrate? can you castrate? can they castrate?
V-ing form
can I be castrating? can you be castrating? can he be castrating? can we be castrating? can you be castrating? can they be castrating?
Perfect
can I have castrated? can you have castrated? can he have castrated? can we have castrated? can you have castrated? can they have castrated?
V-ing perfect
can I have been castrating? can you have been castrating? can he have been castrating? can we have been castrating? can you have been castrating? can they have been castrating?
Interro-negative form
Simple form
can I not castrate? can you not castrate? can he not castrate? can we not castrate? can you not castrate? can they not castrate?
V-ing form
can I not be castrating? can you not be castrating? can he not be castrating? can we not be castrating? can you not be castrating? can they not be castrating?
Perfect
can I not have castrated? can you not have castrated? can he not have castrated? can we not have castrated? can you not have castrated? can they not have castrated?
V-ing perfect
can I not have been castrating? can you not have been castrating? can he not have been castrating? can we not have been castrating? can you not have been castrating? can they not have been castrating?