I can winterise you can winterise he can winterise we can winterise you can winterise they can winterise
V-ing form
I can be winterising you can be winterising he can be winterising we can be winterising you can be winterising they can be winterising
Perfect
I can have winterised you can have winterised he can have winterised we can have winterised you can have winterised they can have winterised
V-ing perfect
I can have been winterising you can have been winterising he can have been winterising we can have been winterising you can have been winterising they can have been winterising
Negation
Simple form
I cannot winterise you cannot winterise he cannot winterise we cannot winterise you cannot winterise they cannot winterise
V-ing form
I cannot be winterising you cannot be winterising he cannot be winterising we cannot be winterising you cannot be winterising they cannot be winterising
Perfect
I cannot have winterised you cannot have winterised he cannot have winterised we cannot have winterised you cannot have winterised they cannot have winterised
V-ing perfect
I cannot have been winterising you cannot have been winterising he cannot have been winterising we cannot have been winterising you cannot have been winterising they cannot have been winterising
Interrogative form
Simple form
can I winterise? can you winterise? can he winterise? can we winterise? can you winterise? can they winterise?
V-ing form
can I be winterising? can you be winterising? can he be winterising? can we be winterising? can you be winterising? can they be winterising?
Perfect
can I have winterised? can you have winterised? can he have winterised? can we have winterised? can you have winterised? can they have winterised?
V-ing perfect
can I have been winterising? can you have been winterising? can he have been winterising? can we have been winterising? can you have been winterising? can they have been winterising?
Interro-negative form
Simple form
can I not winterise? can you not winterise? can he not winterise? can we not winterise? can you not winterise? can they not winterise?
V-ing form
can I not be winterising? can you not be winterising? can he not be winterising? can we not be winterising? can you not be winterising? can they not be winterising?
Perfect
can I not have winterised? can you not have winterised? can he not have winterised? can we not have winterised? can you not have winterised? can they not have winterised?
V-ing perfect
can I not have been winterising? can you not have been winterising? can he not have been winterising? can we not have been winterising? can you not have been winterising? can they not have been winterising?