I can plunge you can plunge she can plunge we can plunge you can plunge they can plunge
V-ing form
I can be plunging you can be plunging she can be plunging we can be plunging you can be plunging they can be plunging
Perfect
I can have plunged you can have plunged she can have plunged we can have plunged you can have plunged they can have plunged
V-ing perfect
I can have been plunging you can have been plunging she can have been plunging we can have been plunging you can have been plunging they can have been plunging
Negation
Simple form
I cannot plunge you cannot plunge she cannot plunge we cannot plunge you cannot plunge they cannot plunge
V-ing form
I cannot be plunging you cannot be plunging she cannot be plunging we cannot be plunging you cannot be plunging they cannot be plunging
Perfect
I cannot have plunged you cannot have plunged she cannot have plunged we cannot have plunged you cannot have plunged they cannot have plunged
V-ing perfect
I cannot have been plunging you cannot have been plunging she cannot have been plunging we cannot have been plunging you cannot have been plunging they cannot have been plunging
Interrogative form
Simple form
can I plunge? can you plunge? can she plunge? can we plunge? can you plunge? can they plunge?
V-ing form
can I be plunging? can you be plunging? can she be plunging? can we be plunging? can you be plunging? can they be plunging?
Perfect
can I have plunged? can you have plunged? can she have plunged? can we have plunged? can you have plunged? can they have plunged?
V-ing perfect
can I have been plunging? can you have been plunging? can she have been plunging? can we have been plunging? can you have been plunging? can they have been plunging?
Interro-negative form
Simple form
can I not plunge? can you not plunge? can she not plunge? can we not plunge? can you not plunge? can they not plunge?
V-ing form
can I not be plunging? can you not be plunging? can she not be plunging? can we not be plunging? can you not be plunging? can they not be plunging?
Perfect
can I not have plunged? can you not have plunged? can she not have plunged? can we not have plunged? can you not have plunged? can they not have plunged?
V-ing perfect
can I not have been plunging? can you not have been plunging? can she not have been plunging? can we not have been plunging? can you not have been plunging? can they not have been plunging?