I can charter you can charter he can charter we can charter you can charter they can charter
V-ing form
I can be chartering you can be chartering he can be chartering we can be chartering you can be chartering they can be chartering
Perfect
I can have chartered you can have chartered he can have chartered we can have chartered you can have chartered they can have chartered
V-ing perfect
I can have been chartering you can have been chartering he can have been chartering we can have been chartering you can have been chartering they can have been chartering
Negation
Simple form
I can't charter you can't charter he can't charter we can't charter you can't charter they can't charter
V-ing form
I can't be chartering you can't be chartering he can't be chartering we can't be chartering you can't be chartering they can't be chartering
Perfect
I can't have chartered you can't have chartered he can't have chartered we can't have chartered you can't have chartered they can't have chartered
V-ing perfect
I can't have been chartering you can't have been chartering he can't have been chartering we can't have been chartering you can't have been chartering they can't have been chartering
Interrogative form
Simple form
can I charter? can you charter? can he charter? can we charter? can you charter? can they charter?
V-ing form
can I be chartering? can you be chartering? can he be chartering? can we be chartering? can you be chartering? can they be chartering?
Perfect
can I have chartered? can you have chartered? can he have chartered? can we have chartered? can you have chartered? can they have chartered?
V-ing perfect
can I have been chartering? can you have been chartering? can he have been chartering? can we have been chartering? can you have been chartering? can they have been chartering?
Interro-negative form
Simple form
can't I charter? can't you charter? can't he charter? can't we charter? can't you charter? can't they charter?
V-ing form
can't I be chartering? can't you be chartering? can't he be chartering? can't we be chartering? can't you be chartering? can't they be chartering?
Perfect
can't I have chartered? can't you have chartered? can't he have chartered? can't we have chartered? can't you have chartered? can't they have chartered?
V-ing perfect
can't I have been chartering? can't you have been chartering? can't he have been chartering? can't we have been chartering? can't you have been chartering? can't they have been chartering?