I can expostulate you can expostulate he can expostulate we can expostulate you can expostulate they can expostulate
V-ing form
I can be expostulating you can be expostulating he can be expostulating we can be expostulating you can be expostulating they can be expostulating
Perfect
I can have expostulated you can have expostulated he can have expostulated we can have expostulated you can have expostulated they can have expostulated
V-ing perfect
I can have been expostulating you can have been expostulating he can have been expostulating we can have been expostulating you can have been expostulating they can have been expostulating
Negation
Simple form
I cannot expostulate you cannot expostulate he cannot expostulate we cannot expostulate you cannot expostulate they cannot expostulate
V-ing form
I cannot be expostulating you cannot be expostulating he cannot be expostulating we cannot be expostulating you cannot be expostulating they cannot be expostulating
Perfect
I cannot have expostulated you cannot have expostulated he cannot have expostulated we cannot have expostulated you cannot have expostulated they cannot have expostulated
V-ing perfect
I cannot have been expostulating you cannot have been expostulating he cannot have been expostulating we cannot have been expostulating you cannot have been expostulating they cannot have been expostulating
Interrogative form
Simple form
can I expostulate? can you expostulate? can he expostulate? can we expostulate? can you expostulate? can they expostulate?
V-ing form
can I be expostulating? can you be expostulating? can he be expostulating? can we be expostulating? can you be expostulating? can they be expostulating?
Perfect
can I have expostulated? can you have expostulated? can he have expostulated? can we have expostulated? can you have expostulated? can they have expostulated?
V-ing perfect
can I have been expostulating? can you have been expostulating? can he have been expostulating? can we have been expostulating? can you have been expostulating? can they have been expostulating?
Interro-negative form
Simple form
can I not expostulate? can you not expostulate? can he not expostulate? can we not expostulate? can you not expostulate? can they not expostulate?
V-ing form
can I not be expostulating? can you not be expostulating? can he not be expostulating? can we not be expostulating? can you not be expostulating? can they not be expostulating?
Perfect
can I not have expostulated? can you not have expostulated? can he not have expostulated? can we not have expostulated? can you not have expostulated? can they not have expostulated?
V-ing perfect
can I not have been expostulating? can you not have been expostulating? can he not have been expostulating? can we not have been expostulating? can you not have been expostulating? can they not have been expostulating?