I can pale you can pale he can pale we can pale you can pale they can pale
V-ing form
I can be paling you can be paling he can be paling we can be paling you can be paling they can be paling
Perfect
I can have paled you can have paled he can have paled we can have paled you can have paled they can have paled
V-ing perfect
I can have been paling you can have been paling he can have been paling we can have been paling you can have been paling they can have been paling
Negation
Simple form
I can't pale you can't pale he can't pale we can't pale you can't pale they can't pale
V-ing form
I can't be paling you can't be paling he can't be paling we can't be paling you can't be paling they can't be paling
Perfect
I can't have paled you can't have paled he can't have paled we can't have paled you can't have paled they can't have paled
V-ing perfect
I can't have been paling you can't have been paling he can't have been paling we can't have been paling you can't have been paling they can't have been paling
Interrogative form
Simple form
can I pale? can you pale? can he pale? can we pale? can you pale? can they pale?
V-ing form
can I be paling? can you be paling? can he be paling? can we be paling? can you be paling? can they be paling?
Perfect
can I have paled? can you have paled? can he have paled? can we have paled? can you have paled? can they have paled?
V-ing perfect
can I have been paling? can you have been paling? can he have been paling? can we have been paling? can you have been paling? can they have been paling?
Interro-negative form
Simple form
can't I pale? can't you pale? can't he pale? can't we pale? can't you pale? can't they pale?
V-ing form
can't I be paling? can't you be paling? can't he be paling? can't we be paling? can't you be paling? can't they be paling?
Perfect
can't I have paled? can't you have paled? can't he have paled? can't we have paled? can't you have paled? can't they have paled?
V-ing perfect
can't I have been paling? can't you have been paling? can't he have been paling? can't we have been paling? can't you have been paling? can't they have been paling?