I can regale you can regale he can regale we can regale you can regale they can regale
V-ing form
I can be regaling you can be regaling he can be regaling we can be regaling you can be regaling they can be regaling
Perfect
I can have regaled you can have regaled he can have regaled we can have regaled you can have regaled they can have regaled
V-ing perfect
I can have been regaling you can have been regaling he can have been regaling we can have been regaling you can have been regaling they can have been regaling
Negation
Simple form
I can't regale you can't regale he can't regale we can't regale you can't regale they can't regale
V-ing form
I can't be regaling you can't be regaling he can't be regaling we can't be regaling you can't be regaling they can't be regaling
Perfect
I can't have regaled you can't have regaled he can't have regaled we can't have regaled you can't have regaled they can't have regaled
V-ing perfect
I can't have been regaling you can't have been regaling he can't have been regaling we can't have been regaling you can't have been regaling they can't have been regaling
Interrogative form
Simple form
can I regale? can you regale? can he regale? can we regale? can you regale? can they regale?
V-ing form
can I be regaling? can you be regaling? can he be regaling? can we be regaling? can you be regaling? can they be regaling?
Perfect
can I have regaled? can you have regaled? can he have regaled? can we have regaled? can you have regaled? can they have regaled?
V-ing perfect
can I have been regaling? can you have been regaling? can he have been regaling? can we have been regaling? can you have been regaling? can they have been regaling?
Interro-negative form
Simple form
can't I regale? can't you regale? can't he regale? can't we regale? can't you regale? can't they regale?
V-ing form
can't I be regaling? can't you be regaling? can't he be regaling? can't we be regaling? can't you be regaling? can't they be regaling?
Perfect
can't I have regaled? can't you have regaled? can't he have regaled? can't we have regaled? can't you have regaled? can't they have regaled?
V-ing perfect
can't I have been regaling? can't you have been regaling? can't he have been regaling? can't we have been regaling? can't you have been regaling? can't they have been regaling?