can devalue
Regular verb: devalue - devalued- devalued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can devalue
you can devalue
he can devalue
we can devalue
you can devalue
they can devalue 	I can be devaluing
you can be devaluing
he can be devaluing
we can be devaluing
you can be devaluing
they can be devaluing	I can have devalued
you can have devalued
he can have devalued
we can have devalued
you can have devalued
they can have devalued	I can have been devaluing
you can have been devaluing
he can have been devaluing
we can have been devaluing
you can have been devaluing
they can have been devaluing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't devalue
you can't devalue
he can't devalue
we can't devalue
you can't devalue
they can't devalue 	I can't be devaluing
you can't be devaluing
he can't be devaluing
we can't be devaluing
you can't be devaluing
they can't be devaluing	I can't have devalued
you can't have devalued
he can't have devalued
we can't have devalued
you can't have devalued
they can't have devalued	I can't have been devaluing
you can't have been devaluing
he can't have been devaluing
we can't have been devaluing
you can't have been devaluing
they can't have been devaluing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I devalue?
can you devalue?
can he devalue?
can we devalue?
can you devalue?
can they devalue? 	can I be devaluing?
can you be devaluing?
can he be devaluing?
can we be devaluing?
can you be devaluing?
can they be devaluing? 	can I have devalued?
can you have devalued?
can he have devalued?
can we have devalued?
can you have devalued?
can they have devalued? 	can I have been devaluing?
can you have been devaluing?
can he have been devaluing?
can we have been devaluing?
can you have been devaluing?
can they have been devaluing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I devalue?
can't you devalue?
can't he devalue?
can't we devalue?
can't you devalue?
can't they devalue? 	can't I be devaluing?
can't you be devaluing?
can't he be devaluing?
can't we be devaluing?
can't you be devaluing?
can't they be devaluing? 	can't I have devalued?
can't you have devalued?
can't he have devalued?
can't we have devalued?
can't you have devalued?
can't they have devalued? 	can't I have been devaluing?
can't you have been devaluing?
can't he have been devaluing?
can't we have been devaluing?
can't you have been devaluing?
can't they have been devaluing?