could demineralise
Regular verb: demineralise - demineralised- demineralised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could demineralise
you could demineralise
she could demineralise
we could demineralise
you could demineralise
they could demineralise 	I could be demineralising
you could be demineralising
she could be demineralising
we could be demineralising
you could be demineralising
they could be demineralising	I could have demineralised
you could have demineralised
she could have demineralised
we could have demineralised
you could have demineralised
they could have demineralised	I could have been demineralising
you could have been demineralising
she could have been demineralising
we could have been demineralising
you could have been demineralising
they could have been demineralising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not demineralise
you could not demineralise
she could not demineralise
we could not demineralise
you could not demineralise
they could not demineralise 	I could not be demineralising
you could not be demineralising
she could not be demineralising
we could not be demineralising
you could not be demineralising
they could not be demineralising	I could not have demineralised
you could not have demineralised
she could not have demineralised
we could not have demineralised
you could not have demineralised
they could not have demineralised	I could not have been demineralising
you could not have been demineralising
she could not have been demineralising
we could not have been demineralising
you could not have been demineralising
they could not have been demineralising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I demineralise?
could you demineralise?
could she demineralise?
could we demineralise?
could you demineralise?
could they demineralise? 	could I be demineralising?
could you be demineralising?
could she be demineralising?
could we be demineralising?
could you be demineralising?
could they be demineralising? 	could I have demineralised?
could you have demineralised?
could she have demineralised?
could we have demineralised?
could you have demineralised?
could they have demineralised? 	could I have been demineralising?
could you have been demineralising?
could she have been demineralising?
could we have been demineralising?
could you have been demineralising?
could they have been demineralising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not demineralise?
could you not demineralise?
could she not demineralise?
could we not demineralise?
could you not demineralise?
could they not demineralise? 	could I not be demineralising?
could you not be demineralising?
could she not be demineralising?
could we not be demineralising?
could you not be demineralising?
could they not be demineralising? 	could I not have demineralised?
could you not have demineralised?
could she not have demineralised?
could we not have demineralised?
could you not have demineralised?
could they not have demineralised? 	could I not have been demineralising?
could you not have been demineralising?
could she not have been demineralising?
could we not have been demineralising?
could you not have been demineralising?
could they not have been demineralising?