I can lather you can lather he can lather we can lather you can lather they can lather
V-ing form
I can be lathering you can be lathering he can be lathering we can be lathering you can be lathering they can be lathering
Perfect
I can have lathered you can have lathered he can have lathered we can have lathered you can have lathered they can have lathered
V-ing perfect
I can have been lathering you can have been lathering he can have been lathering we can have been lathering you can have been lathering they can have been lathering
Negation
Simple form
I cannot lather you cannot lather he cannot lather we cannot lather you cannot lather they cannot lather
V-ing form
I cannot be lathering you cannot be lathering he cannot be lathering we cannot be lathering you cannot be lathering they cannot be lathering
Perfect
I cannot have lathered you cannot have lathered he cannot have lathered we cannot have lathered you cannot have lathered they cannot have lathered
V-ing perfect
I cannot have been lathering you cannot have been lathering he cannot have been lathering we cannot have been lathering you cannot have been lathering they cannot have been lathering
Interrogative form
Simple form
can I lather? can you lather? can he lather? can we lather? can you lather? can they lather?
V-ing form
can I be lathering? can you be lathering? can he be lathering? can we be lathering? can you be lathering? can they be lathering?
Perfect
can I have lathered? can you have lathered? can he have lathered? can we have lathered? can you have lathered? can they have lathered?
V-ing perfect
can I have been lathering? can you have been lathering? can he have been lathering? can we have been lathering? can you have been lathering? can they have been lathering?
Interro-negative form
Simple form
can I not lather? can you not lather? can he not lather? can we not lather? can you not lather? can they not lather?
V-ing form
can I not be lathering? can you not be lathering? can he not be lathering? can we not be lathering? can you not be lathering? can they not be lathering?
Perfect
can I not have lathered? can you not have lathered? can he not have lathered? can we not have lathered? can you not have lathered? can they not have lathered?
V-ing perfect
can I not have been lathering? can you not have been lathering? can he not have been lathering? can we not have been lathering? can you not have been lathering? can they not have been lathering?