I can loiter you can loiter he can loiter we can loiter you can loiter they can loiter
V-ing form
I can be loitering you can be loitering he can be loitering we can be loitering you can be loitering they can be loitering
Perfect
I can have loitered you can have loitered he can have loitered we can have loitered you can have loitered they can have loitered
V-ing perfect
I can have been loitering you can have been loitering he can have been loitering we can have been loitering you can have been loitering they can have been loitering
Negation
Simple form
I cannot loiter you cannot loiter he cannot loiter we cannot loiter you cannot loiter they cannot loiter
V-ing form
I cannot be loitering you cannot be loitering he cannot be loitering we cannot be loitering you cannot be loitering they cannot be loitering
Perfect
I cannot have loitered you cannot have loitered he cannot have loitered we cannot have loitered you cannot have loitered they cannot have loitered
V-ing perfect
I cannot have been loitering you cannot have been loitering he cannot have been loitering we cannot have been loitering you cannot have been loitering they cannot have been loitering
Interrogative form
Simple form
can I loiter? can you loiter? can he loiter? can we loiter? can you loiter? can they loiter?
V-ing form
can I be loitering? can you be loitering? can he be loitering? can we be loitering? can you be loitering? can they be loitering?
Perfect
can I have loitered? can you have loitered? can he have loitered? can we have loitered? can you have loitered? can they have loitered?
V-ing perfect
can I have been loitering? can you have been loitering? can he have been loitering? can we have been loitering? can you have been loitering? can they have been loitering?
Interro-negative form
Simple form
can I not loiter? can you not loiter? can he not loiter? can we not loiter? can you not loiter? can they not loiter?
V-ing form
can I not be loitering? can you not be loitering? can he not be loitering? can we not be loitering? can you not be loitering? can they not be loitering?
Perfect
can I not have loitered? can you not have loitered? can he not have loitered? can we not have loitered? can you not have loitered? can they not have loitered?
V-ing perfect
can I not have been loitering? can you not have been loitering? can he not have been loitering? can we not have been loitering? can you not have been loitering? can they not have been loitering?