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 can't loiter you can't loiter he can't loiter we can't loiter you can't loiter they can't loiter
V-ing form
I can't be loitering you can't be loitering he can't be loitering we can't be loitering you can't be loitering they can't be loitering
Perfect
I can't have loitered you can't have loitered he can't have loitered we can't have loitered you can't have loitered they can't have loitered
V-ing perfect
I can't have been loitering you can't have been loitering he can't have been loitering we can't have been loitering you can't have been loitering they can't 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't I loiter? can't you loiter? can't he loiter? can't we loiter? can't you loiter? can't they loiter?
V-ing form
can't I be loitering? can't you be loitering? can't he be loitering? can't we be loitering? can't you be loitering? can't they be loitering?
Perfect
can't I have loitered? can't you have loitered? can't he have loitered? can't we have loitered? can't you have loitered? can't they have loitered?
V-ing perfect
can't I have been loitering? can't you have been loitering? can't he have been loitering? can't we have been loitering? can't you have been loitering? can't they have been loitering?