can embitter
Regular verb: embitter - embittered- embittered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can embitter
you can embitter
he can embitter
we can embitter
you can embitter
they can embitter 	I can be embittering
you can be embittering
he can be embittering
we can be embittering
you can be embittering
they can be embittering	I can have embittered
you can have embittered
he can have embittered
we can have embittered
you can have embittered
they can have embittered	I can have been embittering
you can have been embittering
he can have been embittering
we can have been embittering
you can have been embittering
they can have been embittering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot embitter
you cannot embitter
he cannot embitter
we cannot embitter
you cannot embitter
they cannot embitter 	I cannot be embittering
you cannot be embittering
he cannot be embittering
we cannot be embittering
you cannot be embittering
they cannot be embittering	I cannot have embittered
you cannot have embittered
he cannot have embittered
we cannot have embittered
you cannot have embittered
they cannot have embittered	I cannot have been embittering
you cannot have been embittering
he cannot have been embittering
we cannot have been embittering
you cannot have been embittering
they cannot have been embittering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I embitter?
can you embitter?
can he embitter?
can we embitter?
can you embitter?
can they embitter? 	can I be embittering?
can you be embittering?
can he be embittering?
can we be embittering?
can you be embittering?
can they be embittering? 	can I have embittered?
can you have embittered?
can he have embittered?
can we have embittered?
can you have embittered?
can they have embittered? 	can I have been embittering?
can you have been embittering?
can he have been embittering?
can we have been embittering?
can you have been embittering?
can they have been embittering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not embitter?
can you not embitter?
can he not embitter?
can we not embitter?
can you not embitter?
can they not embitter? 	can I not be embittering?
can you not be embittering?
can he not be embittering?
can we not be embittering?
can you not be embittering?
can they not be embittering? 	can I not have embittered?
can you not have embittered?
can he not have embittered?
can we not have embittered?
can you not have embittered?
can they not have embittered? 	can I not have been embittering?
can you not have been embittering?
can he not have been embittering?
can we not have been embittering?
can you not have been embittering?
can they not have been embittering?