I can obturate you can obturate he can obturate we can obturate you can obturate they can obturate
V-ing form
I can be obturating you can be obturating he can be obturating we can be obturating you can be obturating they can be obturating
Perfect
I can have obturated you can have obturated he can have obturated we can have obturated you can have obturated they can have obturated
V-ing perfect
I can have been obturating you can have been obturating he can have been obturating we can have been obturating you can have been obturating they can have been obturating
Negation
Simple form
I cannot obturate you cannot obturate he cannot obturate we cannot obturate you cannot obturate they cannot obturate
V-ing form
I cannot be obturating you cannot be obturating he cannot be obturating we cannot be obturating you cannot be obturating they cannot be obturating
Perfect
I cannot have obturated you cannot have obturated he cannot have obturated we cannot have obturated you cannot have obturated they cannot have obturated
V-ing perfect
I cannot have been obturating you cannot have been obturating he cannot have been obturating we cannot have been obturating you cannot have been obturating they cannot have been obturating
Interrogative form
Simple form
can I obturate? can you obturate? can he obturate? can we obturate? can you obturate? can they obturate?
V-ing form
can I be obturating? can you be obturating? can he be obturating? can we be obturating? can you be obturating? can they be obturating?
Perfect
can I have obturated? can you have obturated? can he have obturated? can we have obturated? can you have obturated? can they have obturated?
V-ing perfect
can I have been obturating? can you have been obturating? can he have been obturating? can we have been obturating? can you have been obturating? can they have been obturating?
Interro-negative form
Simple form
can I not obturate? can you not obturate? can he not obturate? can we not obturate? can you not obturate? can they not obturate?
V-ing form
can I not be obturating? can you not be obturating? can he not be obturating? can we not be obturating? can you not be obturating? can they not be obturating?
Perfect
can I not have obturated? can you not have obturated? can he not have obturated? can we not have obturated? can you not have obturated? can they not have obturated?
V-ing perfect
can I not have been obturating? can you not have been obturating? can he not have been obturating? can we not have been obturating? can you not have been obturating? can they not have been obturating?