could demulsify
Regular verb: demulsify - demulsified- demulsified

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could demulsify
you could demulsify
she could demulsify
we could demulsify
you could demulsify
they could demulsify 	I could be demulsifying
you could be demulsifying
she could be demulsifying
we could be demulsifying
you could be demulsifying
they could be demulsifying	I could have demulsified
you could have demulsified
she could have demulsified
we could have demulsified
you could have demulsified
they could have demulsified	I could have been demulsifying
you could have been demulsifying
she could have been demulsifying
we could have been demulsifying
you could have been demulsifying
they could have been demulsifying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't demulsify
you couldn't demulsify
she couldn't demulsify
we couldn't demulsify
you couldn't demulsify
they couldn't demulsify 	I couldn't be demulsifying
you couldn't be demulsifying
she couldn't be demulsifying
we couldn't be demulsifying
you couldn't be demulsifying
they couldn't be demulsifying	I couldn't have demulsified
you couldn't have demulsified
she couldn't have demulsified
we couldn't have demulsified
you couldn't have demulsified
they couldn't have demulsified	I couldn't have been demulsifying
you couldn't have been demulsifying
she couldn't have been demulsifying
we couldn't have been demulsifying
you couldn't have been demulsifying
they couldn't have been demulsifying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I demulsify?
could you demulsify?
could she demulsify?
could we demulsify?
could you demulsify?
could they demulsify? 	could I be demulsifying?
could you be demulsifying?
could she be demulsifying?
could we be demulsifying?
could you be demulsifying?
could they be demulsifying? 	could I have demulsified?
could you have demulsified?
could she have demulsified?
could we have demulsified?
could you have demulsified?
could they have demulsified? 	could I have been demulsifying?
could you have been demulsifying?
could she have been demulsifying?
could we have been demulsifying?
could you have been demulsifying?
could they have been demulsifying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I demulsify?
couldn't you demulsify?
couldn't she demulsify?
couldn't we demulsify?
couldn't you demulsify?
couldn't they demulsify? 	couldn't I be demulsifying?
couldn't you be demulsifying?
couldn't she be demulsifying?
couldn't we be demulsifying?
couldn't you be demulsifying?
couldn't they be demulsifying? 	couldn't I have demulsified?
couldn't you have demulsified?
couldn't she have demulsified?
couldn't we have demulsified?
couldn't you have demulsified?
couldn't they have demulsified? 	couldn't I have been demulsifying?
couldn't you have been demulsifying?
couldn't she have been demulsifying?
couldn't we have been demulsifying?
couldn't you have been demulsifying?
couldn't they have been demulsifying?