I can circumcise you can circumcise he can circumcise we can circumcise you can circumcise they can circumcise
V-ing form
I can be circumcising you can be circumcising he can be circumcising we can be circumcising you can be circumcising they can be circumcising
Perfect
I can have circumcised you can have circumcised he can have circumcised we can have circumcised you can have circumcised they can have circumcised
V-ing perfect
I can have been circumcising you can have been circumcising he can have been circumcising we can have been circumcising you can have been circumcising they can have been circumcising
Negation
Simple form
I cannot circumcise you cannot circumcise he cannot circumcise we cannot circumcise you cannot circumcise they cannot circumcise
V-ing form
I cannot be circumcising you cannot be circumcising he cannot be circumcising we cannot be circumcising you cannot be circumcising they cannot be circumcising
Perfect
I cannot have circumcised you cannot have circumcised he cannot have circumcised we cannot have circumcised you cannot have circumcised they cannot have circumcised
V-ing perfect
I cannot have been circumcising you cannot have been circumcising he cannot have been circumcising we cannot have been circumcising you cannot have been circumcising they cannot have been circumcising
Interrogative form
Simple form
can I circumcise? can you circumcise? can he circumcise? can we circumcise? can you circumcise? can they circumcise?
V-ing form
can I be circumcising? can you be circumcising? can he be circumcising? can we be circumcising? can you be circumcising? can they be circumcising?
Perfect
can I have circumcised? can you have circumcised? can he have circumcised? can we have circumcised? can you have circumcised? can they have circumcised?
V-ing perfect
can I have been circumcising? can you have been circumcising? can he have been circumcising? can we have been circumcising? can you have been circumcising? can they have been circumcising?
Interro-negative form
Simple form
can I not circumcise? can you not circumcise? can he not circumcise? can we not circumcise? can you not circumcise? can they not circumcise?
V-ing form
can I not be circumcising? can you not be circumcising? can he not be circumcising? can we not be circumcising? can you not be circumcising? can they not be circumcising?
Perfect
can I not have circumcised? can you not have circumcised? can he not have circumcised? can we not have circumcised? can you not have circumcised? can they not have circumcised?
V-ing perfect
can I not have been circumcising? can you not have been circumcising? can he not have been circumcising? can we not have been circumcising? can you not have been circumcising? can they not have been circumcising?