I can preestablish you can preestablish he can preestablish we can preestablish you can preestablish they can preestablish
V-ing form
I can be preestablishing you can be preestablishing he can be preestablishing we can be preestablishing you can be preestablishing they can be preestablishing
Perfect
I can have preestablished you can have preestablished he can have preestablished we can have preestablished you can have preestablished they can have preestablished
V-ing perfect
I can have been preestablishing you can have been preestablishing he can have been preestablishing we can have been preestablishing you can have been preestablishing they can have been preestablishing
Negation
Simple form
I cannot preestablish you cannot preestablish he cannot preestablish we cannot preestablish you cannot preestablish they cannot preestablish
V-ing form
I cannot be preestablishing you cannot be preestablishing he cannot be preestablishing we cannot be preestablishing you cannot be preestablishing they cannot be preestablishing
Perfect
I cannot have preestablished you cannot have preestablished he cannot have preestablished we cannot have preestablished you cannot have preestablished they cannot have preestablished
V-ing perfect
I cannot have been preestablishing you cannot have been preestablishing he cannot have been preestablishing we cannot have been preestablishing you cannot have been preestablishing they cannot have been preestablishing
Interrogative form
Simple form
can I preestablish? can you preestablish? can he preestablish? can we preestablish? can you preestablish? can they preestablish?
V-ing form
can I be preestablishing? can you be preestablishing? can he be preestablishing? can we be preestablishing? can you be preestablishing? can they be preestablishing?
Perfect
can I have preestablished? can you have preestablished? can he have preestablished? can we have preestablished? can you have preestablished? can they have preestablished?
V-ing perfect
can I have been preestablishing? can you have been preestablishing? can he have been preestablishing? can we have been preestablishing? can you have been preestablishing? can they have been preestablishing?
Interro-negative form
Simple form
can I not preestablish? can you not preestablish? can he not preestablish? can we not preestablish? can you not preestablish? can they not preestablish?
V-ing form
can I not be preestablishing? can you not be preestablishing? can he not be preestablishing? can we not be preestablishing? can you not be preestablishing? can they not be preestablishing?
Perfect
can I not have preestablished? can you not have preestablished? can he not have preestablished? can we not have preestablished? can you not have preestablished? can they not have preestablished?
V-ing perfect
can I not have been preestablishing? can you not have been preestablishing? can he not have been preestablishing? can we not have been preestablishing? can you not have been preestablishing? can they not have been preestablishing?