I can neaten you can neaten he can neaten we can neaten you can neaten they can neaten
V-ing form
I can be neatening you can be neatening he can be neatening we can be neatening you can be neatening they can be neatening
Perfect
I can have neatened you can have neatened he can have neatened we can have neatened you can have neatened they can have neatened
V-ing perfect
I can have been neatening you can have been neatening he can have been neatening we can have been neatening you can have been neatening they can have been neatening
Negation
Simple form
I can't neaten you can't neaten he can't neaten we can't neaten you can't neaten they can't neaten
V-ing form
I can't be neatening you can't be neatening he can't be neatening we can't be neatening you can't be neatening they can't be neatening
Perfect
I can't have neatened you can't have neatened he can't have neatened we can't have neatened you can't have neatened they can't have neatened
V-ing perfect
I can't have been neatening you can't have been neatening he can't have been neatening we can't have been neatening you can't have been neatening they can't have been neatening
Interrogative form
Simple form
can I neaten? can you neaten? can he neaten? can we neaten? can you neaten? can they neaten?
V-ing form
can I be neatening? can you be neatening? can he be neatening? can we be neatening? can you be neatening? can they be neatening?
Perfect
can I have neatened? can you have neatened? can he have neatened? can we have neatened? can you have neatened? can they have neatened?
V-ing perfect
can I have been neatening? can you have been neatening? can he have been neatening? can we have been neatening? can you have been neatening? can they have been neatening?
Interro-negative form
Simple form
can't I neaten? can't you neaten? can't he neaten? can't we neaten? can't you neaten? can't they neaten?
V-ing form
can't I be neatening? can't you be neatening? can't he be neatening? can't we be neatening? can't you be neatening? can't they be neatening?
Perfect
can't I have neatened? can't you have neatened? can't he have neatened? can't we have neatened? can't you have neatened? can't they have neatened?
V-ing perfect
can't I have been neatening? can't you have been neatening? can't he have been neatening? can't we have been neatening? can't you have been neatening? can't they have been neatening?