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 can't embitter
you can't embitter
he can't embitter
we can't embitter
you can't embitter
they can't embitter 	I can't be embittering
you can't be embittering
he can't be embittering
we can't be embittering
you can't be embittering
they can't be embittering	I can't have embittered
you can't have embittered
he can't have embittered
we can't have embittered
you can't have embittered
they can't have embittered	I can't have been embittering
you can't have been embittering
he can't have been embittering
we can't have been embittering
you can't have been embittering
they can't 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't I embitter?
can't you embitter?
can't he embitter?
can't we embitter?
can't you embitter?
can't they embitter? 	can't I be embittering?
can't you be embittering?
can't he be embittering?
can't we be embittering?
can't you be embittering?
can't they be embittering? 	can't I have embittered?
can't you have embittered?
can't he have embittered?
can't we have embittered?
can't you have embittered?
can't they have embittered? 	can't I have been embittering?
can't you have been embittering?
can't he have been embittering?
can't we have been embittering?
can't you have been embittering?
can't they have been embittering?