I'll be preventing you'll be preventing he'll be preventing we'll be preventing you'll be preventing they'll be preventing
Perfect
I'll have prevented you'll have prevented he'll have prevented we'll have prevented you'll have prevented they'll have prevented
V-ing perfect
I'll have been preventing you'll have been preventing he'll have been preventing we'll have been preventing you'll have been preventing they'll have been preventing
Negation
Simple form
I won't prevent you won't prevent he won't prevent we won't prevent you won't prevent they won't prevent
V-ing form
I won't be preventing you won't be preventing he won't be preventing we won't be preventing you won't be preventing they won't be preventing
Perfect
I won't have prevented you won't have prevented he won't have prevented we won't have prevented you won't have prevented they won't have prevented
V-ing perfect
I won't have been preventing you won't have been preventing he won't have been preventing we won't have been preventing you won't have been preventing they won't have been preventing
Interrogative form
Simple form
will I prevent? will you prevent? will he prevent? will we prevent? will you prevent? will they prevent?
V-ing form
will I be preventing? will you be preventing? will he be preventing? will we be preventing? will you be preventing? will they be preventing?
Perfect
will I have prevented? will you have prevented? will he have prevented? will we have prevented? will you have prevented? will they have prevented?
V-ing perfect
will I have been preventing? will you have been preventing? will he have been preventing? will we have been preventing? will you have been preventing? will they have been preventing?
Interro-negative form
Simple form
won't I prevent? won't you prevent? won't he prevent? won't we prevent? won't you prevent? won't they prevent?
V-ing form
won't I be preventing? won't you be preventing? won't he be preventing? won't we be preventing? won't you be preventing? won't they be preventing?
Perfect
won't I have prevented? won't you have prevented? won't he have prevented? won't we have prevented? won't you have prevented? won't they have prevented?
V-ing perfect
won't I have been preventing? won't you have been preventing? won't he have been preventing? won't we have been preventing? won't you have been preventing? won't they have been preventing?